231012232131 has 32 divisors (see below), whose sum is σ = 320018227200. Its totient is φ = 148053951360.

The previous prime is 231012232111. The next prime is 231012232163. The reversal of 231012232131 is 131232210132.

It is not a de Polignac number, because 231012232131 - 2⁶ = 231012232067 is a prime.

It is a super-2 number, since 2×231012232131² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231012232098 and 231012232107.

It is not an unprimeable number, because it can be changed into a prime (231012232111) 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, 68772430 + ... + 68775788.

It is an arithmetic number, because the mean of its divisors is an integer number (10000569600).

Almost surely, 2^231012232131 is an apocalyptic number.

231012232131 is a deficient number, since it is larger than the sum of its proper divisors (89005995069).

231012232131 is a wasteful number, since it uses less digits than its factorization.

231012232131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6579.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 231012232131 its reverse (131232210132), we get a palindrome (362244442263).

The spelling of 231012232131 in words is "two hundred thirty-one billion, twelve million, two hundred thirty-two thousand, one hundred thirty-one".