23215667 has 2 divisors, whose sum is σ = 23215668. Its totient is φ = 23215666.

The previous prime is 23215597. The next prime is 23215669. The reversal of 23215667 is 76651232.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23215667 - 2¹⁴ = 23199283 is a prime.

Together with 23215669, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23215669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11607833 + 11607834.

It is an arithmetic number, because the mean of its divisors is an integer number (11607834).

Almost surely, 2^23215667 is an apocalyptic number.

23215667 is a deficient number, since it is larger than the sum of its proper divisors (1).

23215667 is an equidigital number, since it uses as much as digits as its factorization.

23215667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 32.

The square root of 23215667 is about 4818.2638989578. The cubic root of 23215667 is about 285.2728156087.

Adding to 23215667 its reverse (76651232), we get a palindrome (99866899).

The spelling of 23215667 in words is "twenty-three million, two hundred fifteen thousand, six hundred sixty-seven".