31113131023 has 24 divisors (see below), whose sum is σ = 35343565920. Its totient is φ = 27338613120.

The previous prime is 31113131011. The next prime is 31113131033. The reversal of 31113131023 is 32013131113.

It is not a de Polignac number, because 31113131023 - 2⁵ = 31113130991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31113131003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 303265 + ... + 392677.

It is an arithmetic number, because the mean of its divisors is an integer number (1472648580).

Almost surely, 2^31113131023 is an apocalyptic number.

31113131023 is a deficient number, since it is larger than the sum of its proper divisors (4230434897).

31113131023 is a wasteful number, since it uses less digits than its factorization.

31113131023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89539 (or 89526 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 31113131023 its reverse (32013131113), we get a palindrome (63126262136).

The spelling of 31113131023 in words is "thirty-one billion, one hundred thirteen million, one hundred thirty-one thousand, twenty-three".