371
371 is a narcissistic number: 3³ + 7³ + 1³ = 27 + 343 + 1 = 371.
- Odd
- Composite
Where 371 fits
Why 371 is special
371 is narcissistic, and the second half of the only pair of consecutive three-digit narcissistic numbers — 370 immediately precedes it. It is also a semiprime, factoring as 7 × 53.
Factors & digit properties
- Divisors (4)
- 1, 7, 53, 371
- Prime factorisation
- 7 × 53
- Digit sum
- 11
- Digital root
- 2
Representations
- Decimal
- 371
- Binary
- 101110011
- Octal
- 563
- Hexadecimal
- 173
- Roman numeral
- CCCLXXI
- Scientific notation
- 3.710 × 10^2
Other mathematical patterns
- Deficient number
- Narcissistic (Armstrong) number
- Semiprime
Related numbers & connections
371 is the semiprime 7 × 53, so it is a multiple of 7.
View 7 →370 and 371 are consecutive integers that are both narcissistic — the only such neighbouring pair among three-digit numbers.
View 370 →Mathematics
371 is a narcissistic (Armstrong) number: 3³ + 7³ + 1³ = 27 + 343 + 1 = 371. It follows 370, making the two the only consecutive three-digit narcissistic pair, and factors as the semiprime 7 × 53.
DocumentedMathematics
Common questions
Is 371 a prime number?
No, 371 is not prime.
What are the factors of 371?
The factors of 371 are 1, 7, 53, 371.
What is 371 in Roman numerals?
371 in Roman numerals is CCCLXXI.
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: 30 July 2026