131731364868 has 24 divisors (see below), whose sum is σ = 307520523072. Its totient is φ = 43889406624.

The previous prime is 131731364861. The next prime is 131731364887. The reversal of 131731364868 is 868463137131.

It is a super-2 number, since 2×131731364868² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131731364868.

It is not an unprimeable number, because it can be changed into a prime (131731364861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2604955 + ... + 2655042.

It is an arithmetic number, because the mean of its divisors is an integer number (12813355128).

Almost surely, 2^131731364868 is an apocalyptic number.

It is an amenable number.

131731364868 is an abundant number, since it is smaller than the sum of its proper divisors (175789158204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131731364868 is a wasteful number, since it uses less digits than its factorization.

131731364868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5262091 (or 5262089 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 51.

The spelling of 131731364868 in words is "one hundred thirty-one billion, seven hundred thirty-one million, three hundred sixty-four thousand, eight hundred sixty-eight".