31148575164 has 48 divisors (see below), whose sum is σ = 92292076800. Its totient is φ = 8899592688.

The previous prime is 31148575141. The next prime is 31148575189. The reversal of 31148575164 is 46157584113.

31148575164 is a `hidden beast` number, since 3 + 1 + 1 + 485 + 7 + 5 + 164 = 666.

It is a congruent number.

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, 20600154 + ... + 20601665.

It is an arithmetic number, because the mean of its divisors is an integer number (1922751600).

Almost surely, 2^31148575164 is an apocalyptic number.

It is an amenable number.

31148575164 is an abundant number, since it is smaller than the sum of its proper divisors (61143501636).

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

31148575164 is a wasteful number, since it uses less digits than its factorization.

31148575164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41201839 (or 41201831 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The spelling of 31148575164 in words is "thirty-one billion, one hundred forty-eight million, five hundred seventy-five thousand, one hundred sixty-four".