312392 has 16 divisors (see below), whose sum is σ = 620460. Its totient is φ = 146944.

The previous prime is 312383. The next prime is 312397. The reversal of 312392 is 293213.

It can be written as a sum of positive squares in 2 ways, for example, as 306916 + 5476 = 554^2 + 74^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 312392.

It is not an unprimeable number, because it can be changed into a prime (312397) by changing a digit.

312392 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1013 + ... + 1284.

2³¹²³⁹² is an apocalyptic number.

It is an amenable number.

312392 is a deficient number, since it is larger than the sum of its proper divisors (308068).

312392 is a wasteful number, since it uses less digits than its factorization.

312392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2320 (or 2316 counting only the distinct ones).

The product of its digits is 324, while the sum is 20.

The square root of 312392 is about 558.9203878908. The cubic root of 312392 is about 67.8526219914.

The spelling of 312392 in words is "three hundred twelve thousand, three hundred ninety-two".