User:User97104/numbers/331
| ||||
|---|---|---|---|---|
| Cardinal | three hundred thirty-one | |||
| Ordinal | 331st (three hundred thirty-first) | |||
| Factorization | prime | |||
| Divisors | 1, 331 | |||
| Greek numeral | ΤΛΑ´ | |||
| Roman numeral | CCCXXXI, cccxxxi | |||
| Binary | 1010010112 | |||
| Ternary | 1100213 | |||
| Senary | 13116 | |||
| Octal | 5138 | |||
| Duodecimal | 23712 | |||
| Hexadecimal | 14B16 | |||
331 is the natural number following 330 and preceding 332. It is a prime number.[1]
In mathematics
[edit]It is a centered hexagonal number.[2] It is multiple forms of primes: primes of the form x^2 + xy + 2y^2, with x and y not negative, and primes of the form 4*k + 3.[3]
References
[edit]- ↑ "A000040 - OEIS". oeis.org. Retrieved 2026-04-07.
- ↑ "A003215 - OEIS". oeis.org. Retrieved 2026-04-07.
- ↑ "331 - OEIS". oeis.org. Retrieved 2026-04-07.