1237
1237 is a year in the 13th century. The Mongol invasion of the Rus principalities began with the sack of Ryazan (Eastern Europe).
- Odd
- Prime
Where 1237 fits
Why 1237 is special
1237 has a profile because of what happened in it rather than because of any property of the number: the Mongol invasion of the Rus principalities began with the sack of Ryazan (Eastern Europe).
1237 is part of
Factors & digit properties
- Divisors (2)
- 1, 1237
- Prime factorisation
- 1237
- Digit sum
- 13
- Digital root
- 4
Representations
- Decimal
- 1237
- Scientific notation
- 1.237 × 10^3
Roman numerals
M C C X X X V I I
Binary
1 0 0 1 1 0 1 0 1 0 1
1 × 1,024 + 0 × 512 + 0 × 256 + 1 × 128 + 1 × 64 + 0 × 32 + 1 × 16 + 0 × 8 + 1 × 4 + 0 × 2 + 1 × 1 = 1,237
Octal
2 3 2 5
2 × 512 + 3 × 64 + 2 × 8 + 5 × 1 = 1,237
Hexadecimal
4 d 5
4 × 256 + d × 16 + 5 × 1 = 1,237
Read as powers of two: 1,024 + 128 + 64 + 16 + 4 + 1 = 1,237.
In historical numeral systems
Egyptian
1 lotus, 2 coils of rope, 3 hobbles, 7 strokes
1 × 1,000 + 2 × 100 + 3 × 10 + 7 × 1 = 1,237. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
2 corner wedges (sixties place), 3 corner wedges + 7 vertical wedges (units place)
20 × 60 + 37 = 1237. Places are separated by a space on the tablet, with the higher place written first.
Systems that simply cannot reach this value are left out. Where a script needs a font most readers do not have, the reading is given instead of the glyphs — see number systems for each system in full.
Other mathematical patterns
- Deficient number
Related numbers & connections
1237 is a year in the 13th century, in the 1230s.
Numbers Around Us
- appears inHistorical years
why?
Strength 0.50, confidence "high".
History
In 1237, the Mongol invasion of the Rus principalities began with the sack of Ryazan (Eastern Europe).
DocumentedHistoryGeography: Eastern EuropePeriod: 1237
Common questions
Is 1237 a prime number?
Yes, 1237 is prime — it has exactly two positive divisors: 1 and itself.
What are the factors of 1237?
The factors of 1237 are 1, 1237.
What is 1237 in Roman numerals?
1237 in Roman numerals is MCCXXXVII.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 1 reviewer-confirmed record, sourced and reviewed before publication.
Last reviewed: 15 July 2026