31331056601640 has 64 divisors (see below), whose sum is σ = 93994956633600. Its totient is φ = 8354789597952.

The previous prime is 31331056601633. The next prime is 31331056601659. The reversal of 31331056601640 is 4610665013313.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3925641 + ... + 8835879.

It is an arithmetic number, because the mean of its divisors is an integer number (1468671197400).

Almost surely, 2^{31331056601640} is an apocalyptic number.

31331056601640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31331056601640 is an abundant number, since it is smaller than the sum of its proper divisors (62663900031960).

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

31331056601640 is a wasteful number, since it uses less digits than its factorization.

31331056601640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4963426 (or 4963422 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 39.

The spelling of 31331056601640 in words is "thirty-one trillion, three hundred thirty-one billion, fifty-six million, six hundred one thousand, six hundred forty".