231131125132 has 12 divisors (see below), whose sum is σ = 405679707160. Its totient is φ = 115222637376.

The previous prime is 231131125117. The next prime is 231131125139. The reversal of 231131125132 is 231521131132.

231131125132 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 231131125097 and 231131125106.

It is not an unprimeable number, because it can be changed into a prime (231131125139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85729782 + ... + 85732477.

Almost surely, 2^231131125132 is an apocalyptic number.

It is an amenable number.

231131125132 is a deficient number, since it is larger than the sum of its proper divisors (174548582028).

231131125132 is a wasteful number, since it uses less digits than its factorization.

231131125132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171462600 (or 171462598 counting only the distinct ones).

The product of its digits is 1080, while the sum is 25.

Adding to 231131125132 its reverse (231521131132), we get a palindrome (462652256264).

The spelling of 231131125132 in words is "two hundred thirty-one billion, one hundred thirty-one million, one hundred twenty-five thousand, one hundred thirty-two".