231690611328 has 192 divisors, whose sum is σ = 693744276960. Its totient is φ = 67943270400.

The previous prime is 231690611311. The next prime is 231690611401. The reversal of 231690611328 is 823116096132.

It is a tau number, because it is divible by the number of its divisors (192).

It is a self number, because there is not a number n which added to its sum of digits gives 231690611328.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4030726 + ... + 4087802.

Almost surely, 2^231690611328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231690611328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (346872138480).

231690611328 is an abundant number, since it is smaller than the sum of its proper divisors (462053665632).

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

231690611328 is a wasteful number, since it uses less digits than its factorization.

231690611328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57167 (or 57124 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 42.

The spelling of 231690611328 in words is "two hundred thirty-one billion, six hundred ninety million, six hundred eleven thousand, three hundred twenty-eight".