31031131123323 has 12 divisors (see below), whose sum is σ = 44831065565208. Its totient is φ = 20683580467680.

The previous prime is 31031131123303. The next prime is 31031131123367. The reversal of 31031131123323 is 32332113113013.

31031131123323 is a `hidden beast` number, since 3 + 1 + 0 + 3 + 1 + 1 + 311 + 23 + 323 = 666.

It is not a de Polignac number, because 31031131123323 - 2¹² = 31031131119227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31031131123303) 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, 319972258 + ... + 320069223.

It is an arithmetic number, because the mean of its divisors is an integer number (3735922130434).

Almost surely, 2^{31031131123323} is an apocalyptic number.

31031131123323 is a deficient number, since it is larger than the sum of its proper divisors (13799934441885).

31031131123323 is a wasteful number, since it uses less digits than its factorization.

31031131123323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640046874 (or 640046871 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 27.

Adding to 31031131123323 its reverse (32332113113013), we get a palindrome (63363244236336).

The spelling of 31031131123323 in words is "thirty-one trillion, thirty-one billion, one hundred thirty-one million, one hundred twenty-three thousand, three hundred twenty-three".