320013302220 has 72 divisors (see below), whose sum is σ = 1021796870640. Its totient is φ = 80845464960.

The previous prime is 320013302207. The next prime is 320013302243. The reversal of 320013302220 is 22203310023.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 320013302193 and 320013302202.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46782151 + ... + 46788990.

Almost surely, 2^320013302220 is an apocalyptic number.

320013302220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

320013302220 is an abundant number, since it is smaller than the sum of its proper divisors (701783568420).

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

320013302220 is a wasteful number, since it uses less digits than its factorization.

320013302220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93571175 (or 93571170 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 320013302220 its reverse (22203310023), we get a palindrome (342216612243).

The spelling of 320013302220 in words is "three hundred twenty billion, thirteen million, three hundred two thousand, two hundred twenty".