312915879 has 20 divisors (see below), whose sum is σ = 468691080. Its totient is φ = 208053360.

The previous prime is 312915857. The next prime is 312915899. The reversal of 312915879 is 978519213.

It is not a de Polignac number, because 312915879 - 2⁵ = 312915847 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312915839) 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 19 ways as a sum of consecutive naturals, for example, 26544 + ... + 36474.

It is an arithmetic number, because the mean of its divisors is an integer number (23434554).

Almost surely, 2^312915879 is an apocalyptic number.

312915879 is a deficient number, since it is larger than the sum of its proper divisors (155775201).

312915879 is an equidigital number, since it uses as much as digits as its factorization.

312915879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10332 (or 10323 counting only the distinct ones).

The product of its digits is 136080, while the sum is 45.

The square root of 312915879 is about 17689.4284531751. The cubic root of 312915879 is about 678.9053025174.

The spelling of 312915879 in words is "three hundred twelve million, nine hundred fifteen thousand, eight hundred seventy-nine".