231564328641 has 12 divisors (see below), whose sum is σ = 334620570960. Its totient is φ = 154312174680.

The previous prime is 231564328627. The next prime is 231564328651. The reversal of 231564328641 is 146823465132.

231564328641 is a `hidden beast` number, since 2 + 3 + 1 + 564 + 3 + 2 + 86 + 4 + 1 = 666.

It is not a de Polignac number, because 231564328641 - 2⁵ = 231564328609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231564328651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5314131 + ... + 5357528.

It is an arithmetic number, because the mean of its divisors is an integer number (27885047580).

Almost surely, 2^231564328641 is an apocalyptic number.

It is an amenable number.

231564328641 is a deficient number, since it is larger than the sum of its proper divisors (103056242319).

231564328641 is a wasteful number, since it uses less digits than its factorization.

231564328641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10674076 (or 10674073 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The spelling of 231564328641 in words is "two hundred thirty-one billion, five hundred sixty-four million, three hundred twenty-eight thousand, six hundred forty-one".