320220313 has 16 divisors (see below), whose sum is σ = 389660544. Its totient is φ = 256884480.

The previous prime is 320220301. The next prime is 320220343. The reversal of 320220313 is 313022023.

It is a cyclic number.

It is not a de Polignac number, because 320220313 - 2¹⁷ = 320089241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (320220343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14106 + ... + 28972.

It is an arithmetic number, because the mean of its divisors is an integer number (24353784).

Almost surely, 2^320220313 is an apocalyptic number.

It is an amenable number.

320220313 is a deficient number, since it is larger than the sum of its proper divisors (69440231).

320220313 is a wasteful number, since it uses less digits than its factorization.

320220313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15072.

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

The square root of 320220313 is about 17894.7006960161. The cubic root of 320220313 is about 684.1473134653.

Adding to 320220313 its reverse (313022023), we get a palindrome (633242336).

The spelling of 320220313 in words is "three hundred twenty million, two hundred twenty thousand, three hundred thirteen".