320321033320 has 32 divisors (see below), whose sum is σ = 721122666120. Its totient is φ = 128057241600.

The previous prime is 320321033309. The next prime is 320321033381. The reversal of 320321033320 is 23330123023.

It can be written as a sum of positive squares in 4 ways, for example, as 138826288836 + 181494744484 = 372594^2 + 426022^2 .

It is a junction number, because it is equal to n+sod(n) for n = 320321033291 and 320321033300.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2151177 + ... + 2295256.

Almost surely, 2^320321033320 is an apocalyptic number.

It is an amenable number.

320321033320 is an abundant number, since it is smaller than the sum of its proper divisors (400801632800).

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

320321033320 is a wasteful number, since it uses less digits than its factorization.

320321033320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4448245 (or 4448241 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 22.

Adding to 320321033320 its reverse (23330123023), we get a palindrome (343651156343).

The spelling of 320321033320 in words is "three hundred twenty billion, three hundred twenty-one million, thirty-three thousand, three hundred twenty".