23218297 has 2 divisors, whose sum is σ = 23218298. Its totient is φ = 23218296.

The previous prime is 23218249. The next prime is 23218303. The reversal of 23218297 is 79281232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22838841 + 379456 = 4779^2 + 616^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23218297 is a prime.

It is not a weakly prime, because it can be changed into another prime (23218397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11609148 + 11609149.

It is an arithmetic number, because the mean of its divisors is an integer number (11609149).

Almost surely, 2^23218297 is an apocalyptic number.

It is an amenable number.

23218297 is a deficient number, since it is larger than the sum of its proper divisors (1).

23218297 is an equidigital number, since it uses as much as digits as its factorization.

23218297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 34.

The square root of 23218297 is about 4818.5368111077. The cubic root of 23218297 is about 285.2835876328.

The spelling of 23218297 in words is "twenty-three million, two hundred eighteen thousand, two hundred ninety-seven".