131110031 has 12 divisors (see below), whose sum is σ = 142432560. Its totient is φ = 120631680.

The previous prime is 131110009. The next prime is 131110033. The reversal of 131110031 is 130011131.

It is a happy number.

It is not a de Polignac number, because 131110031 - 2¹⁰ = 131109007 is a prime.

It is a super-2 number, since 2×131110031² = 34379680457641922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131109994 and 131110021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131110033) 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, 59591 + ... + 61751.

It is an arithmetic number, because the mean of its divisors is an integer number (11869380).

Almost surely, 2^131110031 is an apocalyptic number.

131110031 is a deficient number, since it is larger than the sum of its proper divisors (11322529).

131110031 is a wasteful number, since it uses less digits than its factorization.

131110031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2546 (or 2533 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 11.

The square root of 131110031 is about 11450.3288599062. The cubic root of 131110031 is about 508.0174614764.

Adding to 131110031 its reverse (130011131), we get a palindrome (261121162).

It can be divided in two parts, 1311100 and 31, that added together give a palindrome (1311131).

The spelling of 131110031 in words is "one hundred thirty-one million, one hundred ten thousand, thirty-one".