231023129132 has 24 divisors (see below), whose sum is σ = 411003662832. Its totient is φ = 113594299200.

The previous prime is 231023129111. The next prime is 231023129149. The reversal of 231023129132 is 231921320132.

It is a junction number, because it is equal to n+sod(n) for n = 231023129095 and 231023129104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1107158 + ... + 1299170.

It is an arithmetic number, because the mean of its divisors is an integer number (17125152618).

Almost surely, 2^231023129132 is an apocalyptic number.

It is an amenable number.

231023129132 is a deficient number, since it is larger than the sum of its proper divisors (179980533700).

231023129132 is a wasteful number, since it uses less digits than its factorization.

231023129132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197009 (or 197007 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

Adding to 231023129132 its reverse (231921320132), we get a palindrome (462944449264).

The spelling of 231023129132 in words is "two hundred thirty-one billion, twenty-three million, one hundred twenty-nine thousand, one hundred thirty-two".