31375131875 has 10 divisors (see below), whose sum is σ = 39206365572. Its totient is φ = 25100105000.

The previous prime is 31375131863. The next prime is 31375131883. The reversal of 31375131875 is 57813157313.

It is a de Polignac number, because none of the positive numbers 2^k-31375131875 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 25099481 + ... + 25100730.

Almost surely, 2^31375131875 is an apocalyptic number.

31375131875 is a deficient number, since it is larger than the sum of its proper divisors (7831233697).

31375131875 is an frugal number, since it uses more digits than its factorization.

31375131875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50200231 (or 50200216 counting only the distinct ones).

The product of its digits is 264600, while the sum is 44.

The spelling of 31375131875 in words is "thirty-one billion, three hundred seventy-five million, one hundred thirty-one thousand, eight hundred seventy-five".