23215879 has 2 divisors, whose sum is σ = 23215880. Its totient is φ = 23215878.

The previous prime is 23215867. The next prime is 23215903. The reversal of 23215879 is 97851232.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23215879 - 2¹⁷ = 23084807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23215849) 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, 11607939 + 11607940.

It is an arithmetic number, because the mean of its divisors is an integer number (11607940).

Almost surely, 2^23215879 is an apocalyptic number.

23215879 is a deficient number, since it is larger than the sum of its proper divisors (1).

23215879 is an equidigital number, since it uses as much as digits as its factorization.

23215879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 37.

The square root of 23215879 is about 4818.2858985328. The cubic root of 23215879 is about 285.2736839541.

The spelling of 23215879 in words is "twenty-three million, two hundred fifteen thousand, eight hundred seventy-nine".