23015957 has 2 divisors, whose sum is σ = 23015958. Its totient is φ = 23015956.

The previous prime is 23015929. The next prime is 23015989. The reversal of 23015957 is 75951032.

It is an a-pointer prime, because the next prime (23015989) can be obtained adding 23015957 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20484676 + 2531281 = 4526^2 + 1591^2 .

It is a cyclic number.

It is not a de Polignac number, because 23015957 - 2⁸ = 23015701 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23015917) 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, 11507978 + 11507979.

It is an arithmetic number, because the mean of its divisors is an integer number (11507979).

Almost surely, 2^23015957 is an apocalyptic number.

It is an amenable number.

23015957 is a deficient number, since it is larger than the sum of its proper divisors (1).

23015957 is an equidigital number, since it uses as much as digits as its factorization.

23015957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9450, while the sum is 32.

The square root of 23015957 is about 4797.4948671155. The cubic root of 23015957 is about 284.4524502966.

Adding to 23015957 its reverse (75951032), we get a palindrome (98966989).

The spelling of 23015957 in words is "twenty-three million, fifteen thousand, nine hundred fifty-seven".