231322637832 has 128 divisors (see below), whose sum is σ = 683479157760. Its totient is φ = 64318014720.

The previous prime is 231322637789. The next prime is 231322637873. The reversal of 231322637832 is 238736223132.

231322637832 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 371343 + ... + 774945.

It is an arithmetic number, because the mean of its divisors is an integer number (5339680920).

Almost surely, 2^231322637832 is an apocalyptic number.

231322637832 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231322637832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (341739578880).

231322637832 is an abundant number, since it is smaller than the sum of its proper divisors (452156519928).

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

231322637832 is a wasteful number, since it uses less digits than its factorization.

231322637832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403803 (or 403799 counting only the distinct ones).

The product of its digits is 435456, while the sum is 42.

The spelling of 231322637832 in words is "two hundred thirty-one billion, three hundred twenty-two million, six hundred thirty-seven thousand, eight hundred thirty-two".