231551304254532 has 18 divisors (see below), whose sum is σ = 585310241310158. Its totient is φ = 77183768084832.

The previous prime is 231551304254441. The next prime is 231551304254549. The reversal of 231551304254532 is 235452403155132.

231551304254532 is a `hidden beast` number, since 2 + 3 + 1 + 5 + 5 + 1 + 30 + 42 + 545 + 32 = 666.

It can be written as a sum of positive squares in only one way, i.e., 178174603418436 + 53376700836096 = 13348206^2 + 7305936^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3215990336833 + ... + 3215990336904.

Almost surely, 2^{231551304254532} is an apocalyptic number.

It is an amenable number.

231551304254532 is an abundant number, since it is smaller than the sum of its proper divisors (353758937055626).

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

231551304254532 is a wasteful number, since it uses less digits than its factorization.

231551304254532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6431980673747 (or 6431980673742 counting only the distinct ones).

The product of its (nonzero) digits is 2160000, while the sum is 45.

The spelling of 231551304254532 in words is "two hundred thirty-one trillion, five hundred fifty-one billion, three hundred four million, two hundred fifty-four thousand, five hundred thirty-two".