23215867 has 2 divisors, whose sum is σ = 23215868. Its totient is φ = 23215866.

The previous prime is 23215849. The next prime is 23215879. The reversal of 23215867 is 76851232.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23215867 - 2¹¹ = 23213819 is a prime.

It is not a weakly prime, because it can be changed into another prime (23215817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11607933 + 11607934.

It is an arithmetic number, because the mean of its divisors is an integer number (11607934).

Almost surely, 2^23215867 is an apocalyptic number.

23215867 is a deficient number, since it is larger than the sum of its proper divisors (1).

23215867 is an equidigital number, since it uses as much as digits as its factorization.

23215867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 34.

The square root of 23215867 is about 4818.2846532765. The cubic root of 23215867 is about 285.2736348026.

The spelling of 23215867 in words is "twenty-three million, two hundred fifteen thousand, eight hundred sixty-seven".