31692123873 has 12 divisors (see below), whose sum is σ = 45780061860. Its totient is φ = 21126905856.

The previous prime is 31692123857. The next prime is 31692123917. The reversal of 31692123873 is 37832129613.

It can be written as a sum of positive squares in 2 ways, for example, as 19969081344 + 11723042529 = 141312^2 + 108273^2 .

It is not a de Polignac number, because 31692123873 - 2⁴ = 31692123857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31692123803) 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, 91873 + ... + 268001.

It is an arithmetic number, because the mean of its divisors is an integer number (3815005155).

Almost surely, 2^31692123873 is an apocalyptic number.

It is an amenable number.

31692123873 is a deficient number, since it is larger than the sum of its proper divisors (14087937987).

31692123873 is a wasteful number, since it uses less digits than its factorization.

31692123873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196128 (or 196125 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The spelling of 31692123873 in words is "thirty-one billion, six hundred ninety-two million, one hundred twenty-three thousand, eight hundred seventy-three".