23111623 has 2 divisors, whose sum is σ = 23111624. Its totient is φ = 23111622.

The previous prime is 23111617. The next prime is 23111633. The reversal of 23111623 is 32611132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23111623 - 2⁵ = 23111591 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23111623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23111633) 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, 11555811 + 11555812.

It is an arithmetic number, because the mean of its divisors is an integer number (11555812).

Almost surely, 2^23111623 is an apocalyptic number.

23111623 is a deficient number, since it is larger than the sum of its proper divisors (1).

23111623 is an equidigital number, since it uses as much as digits as its factorization.

23111623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 19.

The square root of 23111623 is about 4807.4549399864. The cubic root of 23111623 is about 284.8460151039.

Adding to 23111623 its reverse (32611132), we get a palindrome (55722755).

The spelling of 23111623 in words is "twenty-three million, one hundred eleven thousand, six hundred twenty-three".