318856868031 has 16 divisors (see below), whose sum is σ = 465351430880. Its totient is φ = 193002894720.

The previous prime is 318856868027. The next prime is 318856868053. The reversal of 318856868031 is 130868658813.

It is not a de Polignac number, because 318856868031 - 2² = 318856868027 is a prime.

It is a super-2 number, since 2×318856868031² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318806868031) 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, 67012516 + ... + 67017273.

It is an arithmetic number, because the mean of its divisors is an integer number (29084464430).

Almost surely, 2^318856868031 is an apocalyptic number.

318856868031 is a deficient number, since it is larger than the sum of its proper divisors (146494562849).

318856868031 is a wasteful number, since it uses less digits than its factorization.

318856868031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134029866.

The product of its (nonzero) digits is 6635520, while the sum is 57.

The spelling of 318856868031 in words is "three hundred eighteen billion, eight hundred fifty-six million, eight hundred sixty-eight thousand, thirty-one".