231586663896 has 320 divisors, whose sum is σ = 782244672000. Its totient is φ = 62532103680.

The previous prime is 231586663879. The next prime is 231586663927. The reversal of 231586663896 is 698366685132.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 37831716 + ... + 37837836.

It is an arithmetic number, because the mean of its divisors is an integer number (2444514600).

Almost surely, 2^231586663896 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 231586663896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (391122336000).

231586663896 is an abundant number, since it is smaller than the sum of its proper divisors (550658008104).

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

231586663896 is a wasteful number, since it uses less digits than its factorization.

231586663896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6604 (or 6591 counting only the distinct ones).

The product of its digits is 67184640, while the sum is 63.

The spelling of 231586663896 in words is "two hundred thirty-one billion, five hundred eighty-six million, six hundred sixty-three thousand, eight hundred ninety-six".