31235234055172 has 36 divisors (see below), whose sum is σ = 64457053476060. Its totient is φ = 13203151766784.

The previous prime is 31235234055169. The next prime is 31235234055187. The reversal of 31235234055172 is 27155043253213.

It can be written as a sum of positive squares in 2 ways, for example, as 24573177493956 + 6662056561216 = 4957134^2 + 2581096^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1091516097 + ... + 1091544712.

Almost surely, 2^{31235234055172} is an apocalyptic number.

It is an amenable number.

31235234055172 is an abundant number, since it is smaller than the sum of its proper divisors (33221819420888).

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

31235234055172 is a wasteful number, since it uses less digits than its factorization.

31235234055172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2183060900 (or 2183060891 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 43.

The spelling of 31235234055172 in words is "thirty-one trillion, two hundred thirty-five billion, two hundred thirty-four million, fifty-five thousand, one hundred seventy-two".