31864380560 has 40 divisors (see below), whose sum is σ = 74249767800. Its totient is φ = 12717350912.

The previous prime is 31864380557. The next prime is 31864380599. The reversal of 31864380560 is 6508346813.

It can be written as a sum of positive squares in 4 ways, for example, as 2148137104 + 29716243456 = 46348^2 + 172384^2 .

It is a tau number, because it is divible by the number of its divisors (40).

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, 407627 + ... + 479466.

It is an arithmetic number, because the mean of its divisors is an integer number (1856244195).

Almost surely, 2^31864380560 is an apocalyptic number.

It is an amenable number.

31864380560 is an abundant number, since it is smaller than the sum of its proper divisors (42385387240).

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

31864380560 is a wasteful number, since it uses less digits than its factorization.

31864380560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887555 (or 887549 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 44.

The spelling of 31864380560 in words is "thirty-one billion, eight hundred sixty-four million, three hundred eighty thousand, five hundred sixty".