23136123 has 4 divisors (see below), whose sum is σ = 30848168. Its totient is φ = 15424080.

The previous prime is 23136121. The next prime is 23136151. The reversal of 23136123 is 32163132.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 23136123 - 2¹ = 23136121 is a prime.

It is a super-2 number, since 2×23136123² = 1070560374942258, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23136123.

It is not an unprimeable number, because it can be changed into a prime (23136121) 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 in 3 ways as a sum of consecutive naturals, for example, 3856018 + ... + 3856023.

It is an arithmetic number, because the mean of its divisors is an integer number (7712042).

Almost surely, 2^23136123 is an apocalyptic number.

23136123 is a deficient number, since it is larger than the sum of its proper divisors (7712045).

23136123 is an equidigital number, since it uses as much as digits as its factorization.

23136123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7712044.

The product of its digits is 648, while the sum is 21.

The square root of 23136123 is about 4810.0023908518. The cubic root of 23136123 is about 284.9466320509.

Adding to 23136123 its reverse (32163132), we get a palindrome (55299255).

The spelling of 23136123 in words is "twenty-three million, one hundred thirty-six thousand, one hundred twenty-three".