231109968128032 has 48 divisors (see below), whose sum is σ = 520031143033920. Its totient is φ = 99040707341568.

The previous prime is 231109968128003. The next prime is 231109968128047. The reversal of 231109968128032 is 230821869901132.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29983807 + ... + 36895102.

It is an arithmetic number, because the mean of its divisors is an integer number (10833982146540).

Almost surely, 2^{231109968128032} is an apocalyptic number.

It is an amenable number.

231109968128032 is an abundant number, since it is smaller than the sum of its proper divisors (288921174905888).

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

231109968128032 is a wasteful number, since it uses less digits than its factorization.

231109968128032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66894353 (or 66894345 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 55.

The spelling of 231109968128032 in words is "two hundred thirty-one trillion, one hundred nine billion, nine hundred sixty-eight million, one hundred twenty-eight thousand, thirty-two".