323809943 has 2 divisors, whose sum is σ = 323809944. Its totient is φ = 323809942.

The previous prime is 323809919. The next prime is 323809961. The reversal of 323809943 is 349908323.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-323809943 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 323809943.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (323809963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161904971 + 161904972.

It is an arithmetic number, because the mean of its divisors is an integer number (161904972).

Almost surely, 2^323809943 is an apocalyptic number.

323809943 is a deficient number, since it is larger than the sum of its proper divisors (1).

323809943 is an equidigital number, since it uses as much as digits as its factorization.

323809943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 41.

The square root of 323809943 is about 17994.7198644491. The cubic root of 323809943 is about 686.6942223784.

The spelling of 323809943 in words is "three hundred twenty-three million, eight hundred nine thousand, nine hundred forty-three".