31113558371 has 24 divisors (see below), whose sum is σ = 37364539680. Its totient is φ = 25813251072.

The previous prime is 31113558347. The next prime is 31113558397. The reversal of 31113558371 is 17385531113.

It is not a de Polignac number, because 31113558371 - 2¹⁰ = 31113557347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31113558331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 305450 + ... + 394368.

It is an arithmetic number, because the mean of its divisors is an integer number (1556855820).

Almost surely, 2^31113558371 is an apocalyptic number.

31113558371 is a deficient number, since it is larger than the sum of its proper divisors (6250981309).

31113558371 is a wasteful number, since it uses less digits than its factorization.

31113558371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89163 (or 89156 counting only the distinct ones).

The product of its digits is 37800, while the sum is 38.

The spelling of 31113558371 in words is "thirty-one billion, one hundred thirteen million, five hundred fifty-eight thousand, three hundred seventy-one".