31243496807664 has 160 divisors (see below), whose sum is σ = 97271719836480. Its totient is φ = 9562810982400.

The previous prime is 31243496807659. The next prime is 31243496807683. The reversal of 31243496807664 is 46670869434213.

31243496807664 is a `hidden beast` number, since 3 + 1 + 2 + 4 + 3 + 496 + 80 + 7 + 6 + 64 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51580467 + ... + 52182674.

It is an arithmetic number, because the mean of its divisors is an integer number (607948248978).

Almost surely, 2^{31243496807664} is an apocalyptic number.

31243496807664 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

31243496807664 is an abundant number, since it is smaller than the sum of its proper divisors (66028223028816).

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

31243496807664 is a wasteful number, since it uses less digits than its factorization.

31243496807664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103763216 (or 103763204 counting only the distinct ones).

The product of its (nonzero) digits is 125411328, while the sum is 63.

The spelling of 31243496807664 in words is "thirty-one trillion, two hundred forty-three billion, four hundred ninety-six million, eight hundred seven thousand, six hundred sixty-four".