320003313 has 16 divisors (see below), whose sum is σ = 504439680. Its totient is φ = 176553216.

The previous prime is 320003309. The next prime is 320003351. The reversal of 320003313 is 313300023.

It is not a de Polignac number, because 320003313 - 2² = 320003309 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 320003292 and 320003301.

It is not an unprimeable number, because it can be changed into a prime (320003813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262120 + ... + 263337.

It is an arithmetic number, because the mean of its divisors is an integer number (31527480).

Almost surely, 2^320003313 is an apocalyptic number.

It is an amenable number.

320003313 is a deficient number, since it is larger than the sum of its proper divisors (184436367).

320003313 is a wasteful number, since it uses less digits than its factorization.

320003313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525496.

The product of its (nonzero) digits is 162, while the sum is 15.

The square root of 320003313 is about 17888.6364209238. The cubic root of 320003313 is about 683.9927391418.

Adding to 320003313 its reverse (313300023), we get a palindrome (633303336).

The spelling of 320003313 in words is "three hundred twenty million, three thousand, three hundred thirteen".