31307299968 has 64 divisors (see below), whose sum is σ = 95040025920. Its totient is φ = 8944942080.

The previous prime is 31307299939. The next prime is 31307299973. The reversal of 31307299968 is 86999270313.

It is a tau number, because it is divible by the number of its divisors (64).

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, 5820843 + ... + 5826218.

It is an arithmetic number, because the mean of its divisors is an integer number (1485000405).

Almost surely, 2^31307299968 is an apocalyptic number.

It is an amenable number.

31307299968 is an abundant number, since it is smaller than the sum of its proper divisors (63732725952).

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

31307299968 is a wasteful number, since it uses less digits than its factorization.

31307299968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11647085 (or 11647073 counting only the distinct ones).

The product of its (nonzero) digits is 4408992, while the sum is 57.

The spelling of 31307299968 in words is "thirty-one billion, three hundred seven million, two hundred ninety-nine thousand, nine hundred sixty-eight".