312979901 has 4 divisors (see below), whose sum is σ = 337055292. Its totient is φ = 288904512.

The previous prime is 312979897. The next prime is 312979939. The reversal of 312979901 is 109979213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 109979213 = 71 ⋅1549003.

It can be written as a sum of positive squares in 2 ways, for example, as 191407225 + 121572676 = 13835^2 + 11026^2 .

It is not a de Polignac number, because 312979901 - 2² = 312979897 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312979501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12037676 + ... + 12037701.

It is an arithmetic number, because the mean of its divisors is an integer number (84263823).

Almost surely, 2^312979901 is an apocalyptic number.

It is an amenable number.

312979901 is a deficient number, since it is larger than the sum of its proper divisors (24075391).

312979901 is a wasteful number, since it uses less digits than its factorization.

312979901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24075390.

The product of its (nonzero) digits is 30618, while the sum is 41.

The square root of 312979901 is about 17691.2379725106. The cubic root of 312979901 is about 678.9516002759.

The spelling of 312979901 in words is "three hundred twelve million, nine hundred seventy-nine thousand, nine hundred one".