31563455164 has 6 divisors (see below), whose sum is σ = 55236046544. Its totient is φ = 15781727580.

The previous prime is 31563455137. The next prime is 31563455171. The reversal of 31563455164 is 46155436513.

It is a self number, because there is not a number n which added to its sum of digits gives 31563455164.

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, 3945431892 + ... + 3945431899.

Almost surely, 2^31563455164 is an apocalyptic number.

It is an amenable number.

31563455164 is a deficient number, since it is larger than the sum of its proper divisors (23672591380).

31563455164 is a wasteful number, since it uses less digits than its factorization.

31563455164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7890863795 (or 7890863793 counting only the distinct ones).

The product of its digits is 648000, while the sum is 43.

The spelling of 31563455164 in words is "thirty-one billion, five hundred sixty-three million, four hundred fifty-five thousand, one hundred sixty-four".