320003223220 has 24 divisors (see below), whose sum is σ = 693684407808. Its totient is φ = 123872215200.

The previous prime is 320003223209. The next prime is 320003223247. The reversal of 320003223220 is 22322300023.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258066496 + ... + 258067735.

It is an arithmetic number, because the mean of its divisors is an integer number (28903516992).

Almost surely, 2^320003223220 is an apocalyptic number.

It is an amenable number.

320003223220 is an abundant number, since it is smaller than the sum of its proper divisors (373681184588).

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

320003223220 is a wasteful number, since it uses less digits than its factorization.

320003223220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516134271 (or 516134269 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 19.

Adding to 320003223220 its reverse (22322300023), we get a palindrome (342325523243).

The spelling of 320003223220 in words is "three hundred twenty billion, three million, two hundred twenty-three thousand, two hundred twenty".