323216689 has 2 divisors, whose sum is σ = 323216690. Its totient is φ = 323216688.

The previous prime is 323216683. The next prime is 323216701. The reversal of 323216689 is 986612323.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 228251664 + 94965025 = 15108^2 + 9745^2 .

It is a cyclic number.

It is not a de Polignac number, because 323216689 - 2¹³ = 323208497 is a prime.

It is not a weakly prime, because it can be changed into another prime (323216683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161608344 + 161608345.

It is an arithmetic number, because the mean of its divisors is an integer number (161608345).

Almost surely, 2^323216689 is an apocalyptic number.

It is an amenable number.

323216689 is a deficient number, since it is larger than the sum of its proper divisors (1).

323216689 is an equidigital number, since it uses as much as digits as its factorization.

323216689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 40.

The square root of 323216689 is about 17978.2281941241. The cubic root of 323216689 is about 686.2746005738.

The spelling of 323216689 in words is "three hundred twenty-three million, two hundred sixteen thousand, six hundred eighty-nine".