31461474816 has 80 divisors (see below), whose sum is σ = 93128191200. Its totient is φ = 10487153664.

The previous prime is 31461474809. The next prime is 31461474859. The reversal of 31461474816 is 61847416413.

31461474816 is a `hidden beast` number, since 3 + 14 + 614 + 7 + 4 + 8 + 16 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1124106 + ... + 1151753.

It is an arithmetic number, because the mean of its divisors is an integer number (1164102390).

Almost surely, 2^31461474816 is an apocalyptic number.

31461474816 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

31461474816 is an abundant number, since it is smaller than the sum of its proper divisors (61666716384).

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

31461474816 is an equidigital number, since it uses as much as digits as its factorization.

31461474816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2275886 (or 2275864 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The spelling of 31461474816 in words is "thirty-one billion, four hundred sixty-one million, four hundred seventy-four thousand, eight hundred sixteen".