312179860831 has 2 divisors, whose sum is σ = 312179860832. Its totient is φ = 312179860830.

The previous prime is 312179860819. The next prime is 312179860871. The reversal of 312179860831 is 138068971213.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312179860831 - 2⁹ = 312179860319 is a prime.

It is a super-2 number, since 2×312179860831² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312179860871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156089930415 + 156089930416.

It is an arithmetic number, because the mean of its divisors is an integer number (156089930416).

Almost surely, 2^312179860831 is an apocalyptic number.

312179860831 is a deficient number, since it is larger than the sum of its proper divisors (1).

312179860831 is an equidigital number, since it uses as much as digits as its factorization.

312179860831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 49.

The spelling of 312179860831 in words is "three hundred twelve billion, one hundred seventy-nine million, eight hundred sixty thousand, eight hundred thirty-one".