23518969 has 2 divisors, whose sum is σ = 23518970. Its totient is φ = 23518968.

The previous prime is 23518967. The next prime is 23518981. The reversal of 23518969 is 96981532.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23474025 + 44944 = 4845^2 + 212^2 .

It is a cyclic number.

It is not a de Polignac number, because 23518969 - 2¹ = 23518967 is a prime.

It is a super-2 number, since 2×23518969² = 1106283805645922, which contains 22 as substring.

Together with 23518967, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (23518967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11759484 + 11759485.

It is an arithmetic number, because the mean of its divisors is an integer number (11759485).

Almost surely, 2^23518969 is an apocalyptic number.

It is an amenable number.

23518969 is a deficient number, since it is larger than the sum of its proper divisors (1).

23518969 is an equidigital number, since it uses as much as digits as its factorization.

23518969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 43.

The square root of 23518969 is about 4849.6359657195. The cubic root of 23518969 is about 286.5097637555.

The spelling of 23518969 in words is "twenty-three million, five hundred eighteen thousand, nine hundred sixty-nine".