31389314264 has 32 divisors (see below), whose sum is σ = 73377619200. Its totient is φ = 12229602720.

The previous prime is 31389314251. The next prime is 31389314269. The reversal of 31389314264 is 46241398313.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31389314269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25477724 + ... + 25478955.

It is an arithmetic number, because the mean of its divisors is an integer number (2293050600).

Almost surely, 2^31389314264 is an apocalyptic number.

It is an amenable number.

31389314264 is an abundant number, since it is smaller than the sum of its proper divisors (41988304936).

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

31389314264 is a wasteful number, since it uses less digits than its factorization.

31389314264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50956703 (or 50956699 counting only the distinct ones).

The product of its digits is 373248, while the sum is 44.

The spelling of 31389314264 in words is "thirty-one billion, three hundred eighty-nine million, three hundred fourteen thousand, two hundred sixty-four".