31768315156 has 6 divisors (see below), whose sum is σ = 55594551530. Its totient is φ = 15884157576.

The previous prime is 31768315141. The next prime is 31768315211. The reversal of 31768315156 is 65151386713.

It can be written as a sum of positive squares in only one way, i.e., 31758804100 + 9511056 = 178210^2 + 3084^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3971039391 + ... + 3971039398.

Almost surely, 2^31768315156 is an apocalyptic number.

It is an amenable number.

31768315156 is a deficient number, since it is larger than the sum of its proper divisors (23826236374).

31768315156 is a wasteful number, since it uses less digits than its factorization.

31768315156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7942078793 (or 7942078791 counting only the distinct ones).

The product of its digits is 453600, while the sum is 46.

The spelling of 31768315156 in words is "thirty-one billion, seven hundred sixty-eight million, three hundred fifteen thousand, one hundred fifty-six".