320322313 has 16 divisors (see below), whose sum is σ = 351801360. Its totient is φ = 290304000.

The previous prime is 320322307. The next prime is 320322341. The reversal of 320322313 is 313223023.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 21827584 + 298494729 = 4672^2 + 17277^2 .

It is a cyclic number.

It is not a de Polignac number, because 320322313 - 2⁵ = 320322281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320322113) 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, 266113 + ... + 267313.

It is an arithmetic number, because the mean of its divisors is an integer number (21987585).

Almost surely, 2^320322313 is an apocalyptic number.

It is an amenable number.

320322313 is a deficient number, since it is larger than the sum of its proper divisors (31479047).

320322313 is a wasteful number, since it uses less digits than its factorization.

320322313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1788.

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 320322313 is about 17897.5504748555. The cubic root of 320322313 is about 684.2199463944.

Adding to 320322313 its reverse (313223023), we get a palindrome (633545336).

The spelling of 320322313 in words is "three hundred twenty million, three hundred twenty-two thousand, three hundred thirteen".