323320313 has 4 divisors (see below), whose sum is σ = 328620708. Its totient is φ = 318019920.

The previous prime is 323320289. The next prime is 323320343. The reversal of 323320313 is 313023323.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 313023323 = 2459 ⋅127297.

It can be written as a sum of positive squares in 2 ways, for example, as 68343289 + 254977024 = 8267^2 + 15968^2 .

It is a cyclic number.

It is not a de Polignac number, because 323320313 - 2²² = 319126009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (323320343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2650106 + ... + 2650227.

It is an arithmetic number, because the mean of its divisors is an integer number (82155177).

Almost surely, 2^323320313 is an apocalyptic number.

It is an amenable number.

323320313 is a deficient number, since it is larger than the sum of its proper divisors (5300395).

323320313 is an equidigital number, since it uses as much as digits as its factorization.

323320313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5300394.

The product of its (nonzero) digits is 972, while the sum is 20.

The square root of 323320313 is about 17981.1098934409. The cubic root of 323320313 is about 686.3479331327.

Adding to 323320313 its reverse (313023323), we get a palindrome (636343636).

The spelling of 323320313 in words is "three hundred twenty-three million, three hundred twenty thousand, three hundred thirteen".