312479 has 4 divisors (see below), whose sum is σ = 316080. Its totient is φ = 308880.

The previous prime is 312469. The next prime is 312509. The reversal of 312479 is 974213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 312479 - 2¹² = 308383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 312479.

It is not an unprimeable number, because it can be changed into a prime (312469) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1667 + ... + 1844.

It is an arithmetic number, because the mean of its divisors is an integer number (79020).

2³¹²⁴⁷⁹ is an apocalyptic number.

312479 is a deficient number, since it is larger than the sum of its proper divisors (3601).

312479 is an equidigital number, since it uses as much as digits as its factorization.

312479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3600.

The product of its digits is 1512, while the sum is 26.

The square root of 312479 is about 558.9982110884. The cubic root of 312479 is about 67.8589203070.

The spelling of 312479 in words is "three hundred twelve thousand, four hundred seventy-nine".