31506343460 has 48 divisors (see below), whose sum is σ = 71267116032. Its totient is φ = 11665737600.

The previous prime is 31506343411. The next prime is 31506343499. The reversal of 31506343460 is 6434360513.

It is a self number, because there is not a number n which added to its sum of digits gives 31506343460.

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, 1090451 + ... + 1118970.

It is an arithmetic number, because the mean of its divisors is an integer number (1484731584).

Almost surely, 2^31506343460 is an apocalyptic number.

It is an amenable number.

31506343460 is an abundant number, since it is smaller than the sum of its proper divisors (39760772572).

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

31506343460 is a wasteful number, since it uses less digits than its factorization.

31506343460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2209484 (or 2209482 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 35.

The spelling of 31506343460 in words is "thirty-one billion, five hundred six million, three hundred forty-three thousand, four hundred sixty".