131232342131 has 32 divisors (see below), whose sum is σ = 149485093056. Its totient is φ = 115128499200.

The previous prime is 131232342107. The next prime is 131232342139. The reversal of 131232342131 is 131243232131.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-131232342131 is a prime.

It is a super-2 number, since 2×131232342131² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131232342131.

It is not an unprimeable number, because it can be changed into a prime (131232342139) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4287875 + ... + 4318371.

It is an arithmetic number, because the mean of its divisors is an integer number (4671409158).

Almost surely, 2^131232342131 is an apocalyptic number.

131232342131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

131232342131 is a deficient number, since it is larger than the sum of its proper divisors (18252750925).

131232342131 is an equidigital number, since it uses as much as digits as its factorization.

131232342131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30644 (or 30622 counting only the distinct ones).

The product of its digits is 2592, while the sum is 26.

Adding to 131232342131 its reverse (131243232131), we get a palindrome (262475574262).

Subtracting 131232342131 from its reverse (131243232131), we obtain a square (10890000 = 3300²).

The spelling of 131232342131 in words is "one hundred thirty-one billion, two hundred thirty-two million, three hundred forty-two thousand, one hundred thirty-one".