320313221032 has 64 divisors (see below), whose sum is σ = 718293381120. Its totient is φ = 130929931968.

The previous prime is 320313221027. The next prime is 320313221051. The reversal of 320313221032 is 230122313023.

It is a junction number, because it is equal to n+sod(n) for n = 320313220994 and 320313221012.

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, 88593 + ... + 805279.

It is an arithmetic number, because the mean of its divisors is an integer number (11223334080).

Almost surely, 2^320313221032 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 320313221032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (359146690560).

320313221032 is an abundant number, since it is smaller than the sum of its proper divisors (397980160088).

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

320313221032 is a wasteful number, since it uses less digits than its factorization.

320313221032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717070 (or 717066 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 320313221032 its reverse (230122313023), we get a palindrome (550435534055).

The spelling of 320313221032 in words is "three hundred twenty billion, three hundred thirteen million, two hundred twenty-one thousand, thirty-two".