231230132031 has 16 divisors (see below), whose sum is σ = 324645008000. Its totient is φ = 145989913248.

The previous prime is 231230131991. The next prime is 231230132047. The reversal of 231230132031 is 130231032132.

It is not a de Polignac number, because 231230132031 - 2⁶ = 231230131967 is a prime.

It is a super-2 number, since 2×231230132031² (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 = 231230131989 and 231230132007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231230131031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 529081 + ... + 861618.

It is an arithmetic number, because the mean of its divisors is an integer number (20290313000).

Almost surely, 2^231230132031 is an apocalyptic number.

231230132031 is a deficient number, since it is larger than the sum of its proper divisors (93414875969).

231230132031 is a wasteful number, since it uses less digits than its factorization.

231230132031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1393638.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 231230132031 its reverse (130231032132), we get a palindrome (361461164163).

The spelling of 231230132031 in words is "two hundred thirty-one billion, two hundred thirty million, one hundred thirty-two thousand, thirty-one".