31713684144 has 40 divisors (see below), whose sum is σ = 86746255920. Its totient is φ = 9949390848.

The previous prime is 31713684137. The next prime is 31713684181. The reversal of 31713684144 is 44148631713.

It is a junction number, because it is equal to n+sod(n) for n = 31713684096 and 31713684105.

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, 19431589 + ... + 19433220.

It is an arithmetic number, because the mean of its divisors is an integer number (2168656398).

Almost surely, 2^31713684144 is an apocalyptic number.

31713684144 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

31713684144 is an abundant number, since it is smaller than the sum of its proper divisors (55032571776).

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

31713684144 is a wasteful number, since it uses less digits than its factorization.

31713684144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38864837 (or 38864831 counting only the distinct ones).

The product of its digits is 193536, while the sum is 42.

The spelling of 31713684144 in words is "thirty-one billion, seven hundred thirteen million, six hundred eighty-four thousand, one hundred forty-four".