131231110031 has 6 divisors (see below), whose sum is σ = 152656597440. Its totient is φ = 112483808556.

The previous prime is 131231109983. The next prime is 131231110061. The reversal of 131231110031 is 130011132131.

It is not a de Polignac number, because 131231110031 - 2⁶ = 131231109967 is a prime.

It is a super-2 number, since 2×131231110031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131231109991 and 131231110009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131231110061) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1339092911 + ... + 1339093008.

It is an arithmetic number, because the mean of its divisors is an integer number (25442766240).

Almost surely, 2^131231110031 is an apocalyptic number.

131231110031 is a deficient number, since it is larger than the sum of its proper divisors (21425487409).

131231110031 is an equidigital number, since it uses as much as digits as its factorization.

131231110031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2678185933 (or 2678185926 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 131231110031 its reverse (130011132131), we get a palindrome (261242242162).

The spelling of 131231110031 in words is "one hundred thirty-one billion, two hundred thirty-one million, one hundred ten thousand, thirty-one".