31371284568 has 64 divisors (see below), whose sum is σ = 84537704160. Its totient is φ = 9643954176.

The previous prime is 31371284563. The next prime is 31371284569. The reversal of 31371284568 is 86548217313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31371284563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 303496 + ... + 393512.

Almost surely, 2^31371284568 is an apocalyptic number.

It is an amenable number.

31371284568 is an abundant number, since it is smaller than the sum of its proper divisors (53166419592).

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

31371284568 is a wasteful number, since it uses less digits than its factorization.

31371284568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91156 (or 91152 counting only the distinct ones).

The product of its digits is 967680, while the sum is 48.

The spelling of 31371284568 in words is "thirty-one billion, three hundred seventy-one million, two hundred eighty-four thousand, five hundred sixty-eight".