231232322131 has 8 divisors (see below), whose sum is σ = 233916681600. Its totient is φ = 228549879360.

The previous prime is 231232322119. The next prime is 231232322141. The reversal of 231232322131 is 131223232132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231232322131 - 2⁷ = 231232322003 is a prime.

It is a super-2 number, since 2×231232322131² (a number of 24 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 = 231232322096 and 231232322105.

It is not an unprimeable number, because it can be changed into a prime (231232322141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235780 + ... + 719761.

It is an arithmetic number, because the mean of its divisors is an integer number (29239585200).

Almost surely, 2^231232322131 is an apocalyptic number.

231232322131 is a deficient number, since it is larger than the sum of its proper divisors (2684359469).

231232322131 is an equidigital number, since it uses as much as digits as its factorization.

231232322131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958349.

The product of its digits is 2592, while the sum is 25.

Adding to 231232322131 its reverse (131223232132), we get a palindrome (362455554263).

The spelling of 231232322131 in words is "two hundred thirty-one billion, two hundred thirty-two million, three hundred twenty-two thousand, one hundred thirty-one".