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331 is a prime number from 301-400. 331 has 2 factors, 1 and 331. It is the 67th prime number, and the fifth prime number from 301-400.

Proofs

  • Yes — 331 can be divided by 1.
  • No — 331 cannot be divided by 2-330.
  • Yes — 331 can be divided by 331.

Relationship with other odd numbers

The numbers before

  • The previous prime number is 317. A large prime gap of fourteen numbers occurs between 317 and 331.
    • The numbers between are composite. 319 = 11 x 29; 323 = 17 x 19; 329 = 7 x 47.
  • The previous prime number before 317 is 311.

The numbers after

  • The next prime number is 337.
    • 331 and 337 are six numbers apart; therefore, they are sexy primes.
  • 347 is the next prime number after 337.