31593925161 has 12 divisors (see below), whose sum is σ = 45650716020. Its totient is φ = 21055672320.

The previous prime is 31593925151. The next prime is 31593925169. The reversal of 31593925161 is 16152939513.

31593925161 is a `hidden beast` number, since 3 + 1 + 593 + 9 + 2 + 51 + 6 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18148131225 + 13445793936 = 134715^2 + 115956^2 .

It is not a de Polignac number, because 31593925161 - 2²⁶ = 31526816297 is a prime.

It is a super-2 number, since 2×31593925161² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31593925169) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 549816 + ... + 604553.

It is an arithmetic number, because the mean of its divisors is an integer number (3804226335).

Almost surely, 2^31593925161 is an apocalyptic number.

It is an amenable number.

31593925161 is a deficient number, since it is larger than the sum of its proper divisors (14056790859).

31593925161 is a wasteful number, since it uses less digits than its factorization.

31593925161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157416 (or 1157413 counting only the distinct ones).

The product of its digits is 218700, while the sum is 45.

The spelling of 31593925161 in words is "thirty-one billion, five hundred ninety-three million, nine hundred twenty-five thousand, one hundred sixty-one".