320213320 has 32 divisors (see below), whose sum is σ = 823406400. Its totient is φ = 109787328.

The previous prime is 320213297. The next prime is 320213323. The reversal of 320213320 is 23312023.

It is a junction number, because it is equal to n+sod(n) for n = 320213294 and 320213303.

It is not an unprimeable number, because it can be changed into a prime (320213323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 571530 + ... + 572089.

It is an arithmetic number, because the mean of its divisors is an integer number (25731450).

Almost surely, 2^320213320 is an apocalyptic number.

It is an amenable number.

320213320 is an abundant number, since it is smaller than the sum of its proper divisors (503193080).

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

320213320 is a wasteful number, since it uses less digits than its factorization.

320213320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1143637 (or 1143633 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 320213320 is about 17894.5053019076. The cubic root of 320213320 is about 684.1423332722.

Adding to 320213320 its reverse (23312023), we get a palindrome (343525343).

The spelling of 320213320 in words is "three hundred twenty million, two hundred thirteen thousand, three hundred twenty".