22431017232 has 160 divisors (see below), whose sum is σ = 69724287360. Its totient is φ = 6863408640.

The previous prime is 22431017227. The next prime is 22431017243. The reversal of 22431017232 is 23271013422.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 22431017196 and 22431017205.

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, 1005463 + ... + 1027529.

It is an arithmetic number, because the mean of its divisors is an integer number (435776796).

Almost surely, 2^22431017232 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 22431017232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34862143680).

22431017232 is an abundant number, since it is smaller than the sum of its proper divisors (47293270128).

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

22431017232 is a wasteful number, since it uses less digits than its factorization.

22431017232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22278 (or 22266 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The spelling of 22431017232 in words is "twenty-two billion, four hundred thirty-one million, seventeen thousand, two hundred thirty-two".