231340408832 has 128 divisors (see below), whose sum is σ = 501977128800. Its totient is φ = 105977217024.

The previous prime is 231340408799. The next prime is 231340408913. The reversal of 231340408832 is 238804043132.

It is a tau number, because it is divible by the number of its divisors (128).

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

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, 59209823 + ... + 59213729.

Almost surely, 2^231340408832 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 231340408832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250988564400).

231340408832 is an abundant number, since it is smaller than the sum of its proper divisors (270636719968).

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

231340408832 is an equidigital number, since it uses as much as digits as its factorization.

231340408832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4089 (or 4061 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 38.

The spelling of 231340408832 in words is "two hundred thirty-one billion, three hundred forty million, four hundred eight thousand, eight hundred thirty-two".