31931416228 has 12 divisors (see below), whose sum is σ = 56113787520. Its totient is φ = 15898905512.

The previous prime is 31931416211. The next prime is 31931416259. The reversal of 31931416228 is 82261413913.

It is a happy number.

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, 16699576 + ... + 16701487.

It is an arithmetic number, because the mean of its divisors is an integer number (4676148960).

Almost surely, 2^31931416228 is an apocalyptic number.

It is an amenable number.

31931416228 is a deficient number, since it is larger than the sum of its proper divisors (24182371292).

31931416228 is a wasteful number, since it uses less digits than its factorization.

31931416228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33401306 (or 33401304 counting only the distinct ones).

The product of its digits is 62208, while the sum is 40.

The spelling of 31931416228 in words is "thirty-one billion, nine hundred thirty-one million, four hundred sixteen thousand, two hundred twenty-eight".