Number 312 is not a prime number. It is a composite number.

A prime number is a natural number greater than 1 that is not a product of two smaller natural numbers. We do not consider 312 as a prime number, because it can be written as a product of two smaller natural numbers (check the factors of number 312 below).

Number of factors: 16.

List of factors/divisors: 1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 312.

Parity: 312 is an even number. It means it is divisible by 2 with no remainder.

Perfect square: no (a square number or perfect square is an integer that is the square of an integer).

Perfect number: no, because the sum of its proper divisors is 528 (perfect number is a positive integer that is equal to the sum of its proper divisors).

Number: Prime number: | 305 no | 306 no | 307 yes | 308 no | 309 no | 310 no | 311 yes | 312 no | 313 yes | 314 no | 315 no | 316 no | 317 yes | 318 no | 319 no |
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