31375132118 has 32 divisors (see below), whose sum is σ = 52226121600. Its totient is φ = 14016562560.

The previous prime is 31375132073. The next prime is 31375132121. The reversal of 31375132118 is 81123157313.

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, 628958 + ... + 677006.

It is an arithmetic number, because the mean of its divisors is an integer number (1632066300).

Almost surely, 2^31375132118 is an apocalyptic number.

31375132118 is a deficient number, since it is larger than the sum of its proper divisors (20850989482).

31375132118 is a wasteful number, since it uses less digits than its factorization.

31375132118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48572.

The product of its digits is 15120, while the sum is 35.

The spelling of 31375132118 in words is "thirty-one billion, three hundred seventy-five million, one hundred thirty-two thousand, one hundred eighteen".