18317323 has 2 divisors, whose sum is σ = 18317324. Its totient is φ = 18317322.

The previous prime is 18317309. The next prime is 18317329. The reversal of 18317323 is 32371381.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18317323 - 2⁵ = 18317291 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18317291 and 18317300.

It is not a weakly prime, because it can be changed into another prime (18317329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9158661 + 9158662.

It is an arithmetic number, because the mean of its divisors is an integer number (9158662).

Almost surely, 2^18317323 is an apocalyptic number.

18317323 is a deficient number, since it is larger than the sum of its proper divisors (1).

18317323 is an equidigital number, since it uses as much as digits as its factorization.

18317323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 28.

The square root of 18317323 is about 4279.8741803936. The cubic root of 18317323 is about 263.6052170641.

The spelling of 18317323 in words is "eighteen million, three hundred seventeen thousand, three hundred twenty-three".