31350471812 has 12 divisors (see below), whose sum is σ = 59850900816. Its totient is φ = 14250214440.

The previous prime is 31350471809. The next prime is 31350471881. The reversal of 31350471812 is 21817405313.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 356255318 + ... + 356255405.

It is an arithmetic number, because the mean of its divisors is an integer number (4987575068).

Almost surely, 2^31350471812 is an apocalyptic number.

It is an amenable number.

31350471812 is a deficient number, since it is larger than the sum of its proper divisors (28500429004).

31350471812 is a wasteful number, since it uses less digits than its factorization.

31350471812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712510738 (or 712510736 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The spelling of 31350471812 in words is "thirty-one billion, three hundred fifty million, four hundred seventy-one thousand, eight hundred twelve".