31964157171 has 16 divisors (see below), whose sum is σ = 47377612800. Its totient is φ = 21298950504.

The previous prime is 31964157157. The next prime is 31964157223. The reversal of 31964157171 is 17175146913.

31964157171 is a `hidden beast` number, since 3 + 1 + 9 + 6 + 4 + 1 + 571 + 71 = 666.

It is not a de Polignac number, because 31964157171 - 2⁵ = 31964157139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31964157151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 235251 + ... + 345356.

It is an arithmetic number, because the mean of its divisors is an integer number (2961100800).

Almost surely, 2^31964157171 is an apocalyptic number.

31964157171 is a deficient number, since it is larger than the sum of its proper divisors (15413455629).

31964157171 is a wasteful number, since it uses less digits than its factorization.

31964157171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582655 (or 582649 counting only the distinct ones).

The product of its digits is 158760, while the sum is 45.

The spelling of 31964157171 in words is "thirty-one billion, nine hundred sixty-four million, one hundred fifty-seven thousand, one hundred seventy-one".