231610945464 has 96 divisors (see below), whose sum is σ = 636249669120. Its totient is φ = 76107403008.

The previous prime is 231610945453. The next prime is 231610945487. The reversal of 231610945464 is 464549016132.

231610945464 is a `hidden beast` number, since 2 + 3 + 1 + 6 + 10 + 94 + 546 + 4 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1354942 + ... + 1516274.

It is an arithmetic number, because the mean of its divisors is an integer number (6627600720).

Almost surely, 2^231610945464 is an apocalyptic number.

231610945464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231610945464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (318124834560).

231610945464 is an abundant number, since it is smaller than the sum of its proper divisors (404638723656).

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

231610945464 is a wasteful number, since it uses less digits than its factorization.

231610945464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161629 (or 161622 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The spelling of 231610945464 in words is "two hundred thirty-one billion, six hundred ten million, nine hundred forty-five thousand, four hundred sixty-four".