320332021232 has 80 divisors (see below), whose sum is σ = 652954493952. Its totient is φ = 151944291840.

The previous prime is 320332021201. The next prime is 320332021283. The reversal of 320332021232 is 232120233023.

It is a super-2 number, since 2×320332021232² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a junction number, because it is equal to n+sod(n) for n = 320332021198 and 320332021207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72949757 + ... + 72954147.

Almost surely, 2^320332021232 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 320332021232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (326477246976).

320332021232 is an abundant number, since it is smaller than the sum of its proper divisors (332622472720).

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

320332021232 is a wasteful number, since it uses less digits than its factorization.

320332021232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6006 (or 6000 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 320332021232 its reverse (232120233023), we get a palindrome (552452254255).

The spelling of 320332021232 in words is "three hundred twenty billion, three hundred thirty-two million, twenty-one thousand, two hundred thirty-two".