231589393728 has 112 divisors (see below), whose sum is σ = 763944282624. Its totient is φ = 60153085440.

The previous prime is 231589393667. The next prime is 231589393751. The reversal of 231589393728 is 827393985132.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7817650 + ... + 7847217.

Almost surely, 2^231589393728 is an apocalyptic number.

231589393728 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

231589393728 is an abundant number, since it is smaller than the sum of its proper divisors (532354888896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231589393728 is a wasteful number, since it uses less digits than its factorization.

231589393728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15664900 (or 15664890 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 60.

The spelling of 231589393728 in words is "two hundred thirty-one billion, five hundred eighty-nine million, three hundred ninety-three thousand, seven hundred twenty-eight".