231332340131 has 4 divisors (see below), whose sum is σ = 231927025200. Its totient is φ = 230737655064.

The previous prime is 231332340097. The next prime is 231332340179. The reversal of 231332340131 is 131043233132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 231332340131 - 2³⁰ = 230258598307 is a prime.

It is a super-2 number, since 2×231332340131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231332340131.

It is not an unprimeable number, because it can be changed into a prime (231332300131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297341951 + ... + 297342728.

It is an arithmetic number, because the mean of its divisors is an integer number (57981756300).

Almost surely, 2^231332340131 is an apocalyptic number.

231332340131 is a deficient number, since it is larger than the sum of its proper divisors (594685069).

231332340131 is an equidigital number, since it uses as much as digits as its factorization.

231332340131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594685068.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 231332340131 its reverse (131043233132), we get a palindrome (362375573263).

The spelling of 231332340131 in words is "two hundred thirty-one billion, three hundred thirty-two million, three hundred forty thousand, one hundred thirty-one".