23218319 has 2 divisors, whose sum is σ = 23218320. Its totient is φ = 23218318.

The previous prime is 23218313. The next prime is 23218331. The reversal of 23218319 is 91381232.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23218319 - 2⁴ = 23218303 is a prime.

It is a super-2 number, since 2×23218319² = 1078180674371522, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 23218291 and 23218300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23218313) by changing a digit.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11609159 + 11609160.

It is an arithmetic number, because the mean of its divisors is an integer number (11609160).

Almost surely, 2^23218319 is an apocalyptic number.

23218319 is a deficient number, since it is larger than the sum of its proper divisors (1).

23218319 is an equidigital number, since it uses as much as digits as its factorization.

23218319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 29.

The square root of 23218319 is about 4818.5390939578. The cubic root of 23218319 is about 285.2836777376.

The spelling of 23218319 in words is "twenty-three million, two hundred eighteen thousand, three hundred nineteen".