31185400059 has 120 divisors (see below), whose sum is σ = 52308172224. Its totient is φ = 18498823200.

The previous prime is 31185400039. The next prime is 31185400061. The reversal of 31185400059 is 95000458113.

It is not a de Polignac number, because 31185400059 - 2⁵ = 31185400027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31185399996 and 31185400032.

It is not an unprimeable number, because it can be changed into a prime (31185400019) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 137380504 + ... + 137380730.

Almost surely, 2^31185400059 is an apocalyptic number.

31185400059 is a deficient number, since it is larger than the sum of its proper divisors (21122772165).

31185400059 is a wasteful number, since it uses less digits than its factorization.

31185400059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499 (or 479 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The spelling of 31185400059 in words is "thirty-one billion, one hundred eighty-five million, four hundred thousand, fifty-nine".