320213323 has 2 divisors, whose sum is σ = 320213324. Its totient is φ = 320213322.

The previous prime is 320213297. The next prime is 320213351. The reversal of 320213323 is 323312023.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320213323 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 320213323.

It is not a weakly prime, because it can be changed into another prime (320213123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160106661 + 160106662.

It is an arithmetic number, because the mean of its divisors is an integer number (160106662).

Almost surely, 2^320213323 is an apocalyptic number.

320213323 is a deficient number, since it is larger than the sum of its proper divisors (1).

320213323 is an equidigital number, since it uses as much as digits as its factorization.

320213323 is an evil number, because the sum of its binary digits is even.

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

The square root of 320213323 is about 17894.5053857322. The cubic root of 320213323 is about 684.1423354087.

Adding to 320213323 its reverse (323312023), we get a palindrome (643525346).

It can be divided in two parts, 32021 and 3323, that added together give a square (35344 = 188²).

The spelling of 320213323 in words is "three hundred twenty million, two hundred thirteen thousand, three hundred twenty-three".