23136811 has 2 divisors, whose sum is σ = 23136812. Its totient is φ = 23136810.

The previous prime is 23136769. The next prime is 23136821. The reversal of 23136811 is 11863132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23136811 - 2⁹ = 23136299 is a prime.

It is not a weakly prime, because it can be changed into another prime (23136821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11568405 + 11568406.

It is an arithmetic number, because the mean of its divisors is an integer number (11568406).

Almost surely, 2^23136811 is an apocalyptic number.

23136811 is a deficient number, since it is larger than the sum of its proper divisors (1).

23136811 is an equidigital number, since it uses as much as digits as its factorization.

23136811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 25.

The square root of 23136811 is about 4810.0739079561. The cubic root of 23136811 is about 284.9494565134.

Adding to 23136811 its reverse (11863132), we get a palindrome (34999943).

The spelling of 23136811 in words is "twenty-three million, one hundred thirty-six thousand, eight hundred eleven".