23136887 has 2 divisors, whose sum is σ = 23136888. Its totient is φ = 23136886.

The previous prime is 23136857. The next prime is 23136901. The reversal of 23136887 is 78863132.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23136887 - 2⁶ = 23136823 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23136887.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23136857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11568443 + 11568444.

It is an arithmetic number, because the mean of its divisors is an integer number (11568444).

Almost surely, 2^23136887 is an apocalyptic number.

23136887 is a deficient number, since it is larger than the sum of its proper divisors (1).

23136887 is an equidigital number, since it uses as much as digits as its factorization.

23136887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 38.

The square root of 23136887 is about 4810.0818080361. The cubic root of 23136887 is about 284.9497685146.

The spelling of 23136887 in words is "twenty-three million, one hundred thirty-six thousand, eight hundred eighty-seven".