323313209 has 2 divisors, whose sum is σ = 323313210. Its totient is φ = 323313208.

The previous prime is 323313127. The next prime is 323313223. The reversal of 323313209 is 902313323.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 216913984 + 106399225 = 14728^2 + 10315^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-323313209 is a prime.

It is a super-2 number, since 2×323313209² = 209062862227755362, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (323313269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161656604 + 161656605.

It is an arithmetic number, because the mean of its divisors is an integer number (161656605).

Almost surely, 2^323313209 is an apocalyptic number.

It is an amenable number.

323313209 is a deficient number, since it is larger than the sum of its proper divisors (1).

323313209 is an equidigital number, since it uses as much as digits as its factorization.

323313209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 26.

The square root of 323313209 is about 17980.9123517134. The cubic root of 323313209 is about 686.3429062794.

The spelling of 323313209 in words is "three hundred twenty-three million, three hundred thirteen thousand, two hundred nine".