231005500032 has 128 divisors (see below), whose sum is σ = 622741824000. Its totient is φ = 75857402880.

The previous prime is 231005500031. The next prime is 231005500051. The reversal of 231005500032 is 230005500132.

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

It is a junction number, because it is equal to n+sod(n) for n = 231005499981 and 231005500008.

It is not an unprimeable number, because it can be changed into a prime (231005500031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46319043 + ... + 46324029.

It is an arithmetic number, because the mean of its divisors is an integer number (4865170500).

Almost surely, 2^231005500032 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 231005500032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (311370912000).

231005500032 is an abundant number, since it is smaller than the sum of its proper divisors (391736323968).

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

231005500032 is a wasteful number, since it uses less digits than its factorization.

231005500032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6774 (or 6762 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 21.

The spelling of 231005500032 in words is "two hundred thirty-one billion, five million, five hundred thousand, thirty-two".