323930561 has 2 divisors, whose sum is σ = 323930562. Its totient is φ = 323930560.

The previous prime is 323930539. The next prime is 323930599. The reversal of 323930561 is 165039323.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 186595600 + 137334961 = 13660^2 + 11719^2 .

It is an emirp because it is prime and its reverse (165039323) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-323930561 is a prime.

It is not a weakly prime, because it can be changed into another prime (323930521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161965280 + 161965281.

It is an arithmetic number, because the mean of its divisors is an integer number (161965281).

Almost surely, 2^323930561 is an apocalyptic number.

It is an amenable number.

323930561 is a deficient number, since it is larger than the sum of its proper divisors (1).

323930561 is an equidigital number, since it uses as much as digits as its factorization.

323930561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14580, while the sum is 32.

The square root of 323930561 is about 17998.0710355304. The cubic root of 323930561 is about 686.7794754755.

Adding to 323930561 its reverse (165039323), we get a palindrome (488969884).

The spelling of 323930561 in words is "three hundred twenty-three million, nine hundred thirty thousand, five hundred sixty-one".