31407235172 has 12 divisors (see below), whose sum is σ = 57352342656. Its totient is φ = 15020851560.

The previous prime is 31407235133. The next prime is 31407235193. The reversal of 31407235172 is 27153270413.

It is a happy number.

It is a super-2 number, since 2×31407235172² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170691404 + ... + 170691587.

It is an arithmetic number, because the mean of its divisors is an integer number (4779361888).

Almost surely, 2^31407235172 is an apocalyptic number.

It is an amenable number.

31407235172 is a deficient number, since it is larger than the sum of its proper divisors (25945107484).

31407235172 is a wasteful number, since it uses less digits than its factorization.

31407235172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341383018 (or 341383016 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 35.

The spelling of 31407235172 in words is "thirty-one billion, four hundred seven million, two hundred thirty-five thousand, one hundred seventy-two".