23643523 has 2 divisors, whose sum is σ = 23643524. Its totient is φ = 23643522.

The previous prime is 23643493. The next prime is 23643533. The reversal of 23643523 is 32534632.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23643523 - 2¹³ = 23635331 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23643491 and 23643500.

It is not a weakly prime, because it can be changed into another prime (23643533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11821761 + 11821762.

It is an arithmetic number, because the mean of its divisors is an integer number (11821762).

Almost surely, 2^23643523 is an apocalyptic number.

23643523 is a deficient number, since it is larger than the sum of its proper divisors (1).

23643523 is an equidigital number, since it uses as much as digits as its factorization.

23643523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 28.

The square root of 23643523 is about 4862.4605910999. The cubic root of 23643523 is about 287.0146487766.

The spelling of 23643523 in words is "twenty-three million, six hundred forty-three thousand, five hundred twenty-three".