64312510031 has 16 divisors (see below), whose sum is σ = 84401928960. Its totient is φ = 47476082880.

The previous prime is 64312509983. The next prime is 64312510043. The reversal of 64312510031 is 13001521346.

It is a cyclic number.

It is not a de Polignac number, because 64312510031 - 2⁶ = 64312509967 is a prime.

It is a super-2 number, since 2×64312510031² (a number of 22 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 (64312510081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21978206 + ... + 21981131.

It is an arithmetic number, because the mean of its divisors is an integer number (5275120560).

Almost surely, 2^64312510031 is an apocalyptic number.

64312510031 is a deficient number, since it is larger than the sum of its proper divisors (20089418929).

64312510031 is a wasteful number, since it uses less digits than its factorization.

64312510031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43959374.

The product of its (nonzero) digits is 2160, while the sum is 26.

The spelling of 64312510031 in words is "sixty-four billion, three hundred twelve million, five hundred ten thousand, thirty-one".