320333313 has 4 divisors (see below), whose sum is σ = 427111088. Its totient is φ = 213555540.

The previous prime is 320333311. The next prime is 320333357. The reversal of 320333313 is 313333023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 320333313 - 2¹ = 320333311 is a prime.

It is a super-2 number, since 2×320333313² = 205226862835111938, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 320333313.

It is not an unprimeable number, because it can be changed into a prime (320333311) 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 3 ways as a sum of consecutive naturals, for example, 53388883 + ... + 53388888.

It is an arithmetic number, because the mean of its divisors is an integer number (106777772).

Almost surely, 2^320333313 is an apocalyptic number.

It is an amenable number.

320333313 is a deficient number, since it is larger than the sum of its proper divisors (106777775).

320333313 is a wasteful number, since it uses less digits than its factorization.

320333313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106777774.

The product of its (nonzero) digits is 1458, while the sum is 21.

The square root of 320333313 is about 17897.8577768402. The cubic root of 320333313 is about 684.2277784363.

Adding to 320333313 its reverse (313333023), we get a palindrome (633666336).

The spelling of 320333313 in words is "three hundred twenty million, three hundred thirty-three thousand, three hundred thirteen".