312939 has 24 divisors (see below), whose sum is σ = 514800. Its totient is φ = 181440.

The previous prime is 312937. The next prime is 312941. The reversal of 312939 is 939213.

It is an interprime number because it is at equal distance from previous prime (312937) and next prime (312941).

It is not a de Polignac number, because 312939 - 2¹ = 312937 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 312939.

It is not an unprimeable number, because it can be changed into a prime (312931) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2817 + ... + 2925.

It is an arithmetic number, because the mean of its divisors is an integer number (21450).

2³¹²⁹³⁹ is an apocalyptic number.

312939 is a deficient number, since it is larger than the sum of its proper divisors (201861).

312939 is a wasteful number, since it uses less digits than its factorization.

312939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155 (or 152 counting only the distinct ones).

The product of its digits is 1458, while the sum is 27.

The square root of 312939 is about 559.4095101087. The cubic root of 312939 is about 67.8922023287.

The spelling of 312939 in words is "three hundred twelve thousand, nine hundred thirty-nine".