231123351524 has 36 divisors (see below), whose sum is σ = 438020574516. Its totient is φ = 106660464768.

The previous prime is 231123351493. The next prime is 231123351527. The reversal of 231123351524 is 425153321132.

231123351524 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 56700181924 + 174423169600 = 238118^2 + 417640^2 .

It is not an unprimeable number, because it can be changed into a prime (231123351527) 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 11 ways as a sum of consecutive naturals, for example, 9893762 + ... + 9917094.

It is an arithmetic number, because the mean of its divisors is an integer number (12167238181).

Almost surely, 2^231123351524 is an apocalyptic number.

It is an amenable number.

231123351524 is a deficient number, since it is larger than the sum of its proper divisors (206897222992).

231123351524 is a wasteful number, since it uses less digits than its factorization.

231123351524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38016 (or 38001 counting only the distinct ones).

The product of its digits is 21600, while the sum is 32.

Adding to 231123351524 its reverse (425153321132), we get a palindrome (656276672656).

The spelling of 231123351524 in words is "two hundred thirty-one billion, one hundred twenty-three million, three hundred fifty-one thousand, five hundred twenty-four".