31352218312 has 64 divisors (see below), whose sum is σ = 63358556400. Its totient is φ = 14490378240.

The previous prime is 31352218301. The next prime is 31352218343. The reversal of 31352218312 is 21381225313.

It can be written as a sum of positive squares in 8 ways, for example, as 6392642116 + 24959576196 = 79954^2 + 157986^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6410364 + ... + 6415252.

Almost surely, 2^31352218312 is an apocalyptic number.

It is an amenable number.

31352218312 is an abundant number, since it is smaller than the sum of its proper divisors (32006338088).

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

31352218312 is a wasteful number, since it uses less digits than its factorization.

31352218312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5746 (or 5742 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The spelling of 31352218312 in words is "thirty-one billion, three hundred fifty-two million, two hundred eighteen thousand, three hundred twelve".