231331234523432 has 16 divisors (see below), whose sum is σ = 433760852137140. Its totient is φ = 115661673953536.

The previous prime is 231331234523377. The next prime is 231331234523449. The reversal of 231331234523432 is 234325432133132.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 219250980379876 + 12080254143556 = 14807126^2 + 3475666^2 .

It is a super-2 number, since 2×231331234523432² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231331234523432.

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 3 ways as a sum of consecutive naturals, for example, 492664193 + ... + 493133520.

Almost surely, 2^{231331234523432} is an apocalyptic number.

It is an amenable number.

231331234523432 is a deficient number, since it is larger than the sum of its proper divisors (202429617613708).

231331234523432 is a wasteful number, since it uses less digits than its factorization.

231331234523432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985827052 (or 985827048 counting only the distinct ones).

The product of its digits is 933120, while the sum is 41.

Adding to 231331234523432 its reverse (234325432133132), we get a palindrome (465656666656564).

The spelling of 231331234523432 in words is "two hundred thirty-one trillion, three hundred thirty-one billion, two hundred thirty-four million, five hundred twenty-three thousand, four hundred thirty-two".