131111344231 has 32 divisors (see below), whose sum is σ = 157938176000. Its totient is φ = 108682650720.

The previous prime is 131111344223. The next prime is 131111344261. The reversal of 131111344231 is 132443111131.

It is not a de Polignac number, because 131111344231 - 2³ = 131111344223 is a prime.

It is a super-2 number, since 2×131111344231² (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 = 131111344196 and 131111344205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131111344261) 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 31 ways as a sum of consecutive naturals, for example, 20550400 + ... + 20556778.

It is an arithmetic number, because the mean of its divisors is an integer number (4935568000).

Almost surely, 2^131111344231 is an apocalyptic number.

131111344231 is a deficient number, since it is larger than the sum of its proper divisors (26826831769).

131111344231 is an equidigital number, since it uses as much as digits as its factorization.

131111344231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8364 (or 8350 counting only the distinct ones).

The product of its digits is 864, while the sum is 25.

Adding to 131111344231 its reverse (132443111131), we get a palindrome (263554455362).

The spelling of 131111344231 in words is "one hundred thirty-one billion, one hundred eleven million, three hundred forty-four thousand, two hundred thirty-one".