312315625031 has 4 divisors (see below), whose sum is σ = 312514934592. Its totient is φ = 312116315472.

The previous prime is 312315625003. The next prime is 312315625033. The reversal of 312315625031 is 130526513213.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312315625031 is a prime.

It is a super-2 number, since 2×312315625031² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312315625033) 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, 99652430 + ... + 99655563.

It is an arithmetic number, because the mean of its divisors is an integer number (78128733648).

Almost surely, 2^312315625031 is an apocalyptic number.

312315625031 is a deficient number, since it is larger than the sum of its proper divisors (199309561).

312315625031 is a wasteful number, since it uses less digits than its factorization.

312315625031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199309560.

The product of its (nonzero) digits is 16200, while the sum is 32.

The spelling of 312315625031 in words is "three hundred twelve billion, three hundred fifteen million, six hundred twenty-five thousand, thirty-one".