23636321 has 2 divisors, whose sum is σ = 23636322. Its totient is φ = 23636320.

The previous prime is 23636309. The next prime is 23636339. The reversal of 23636321 is 12363632.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12673600 + 10962721 = 3560^2 + 3311^2 .

It is a cyclic number.

It is not a de Polignac number, because 23636321 - 2¹⁸ = 23374177 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (23606321) 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, 11818160 + 11818161.

It is an arithmetic number, because the mean of its divisors is an integer number (11818161).

Almost surely, 2^23636321 is an apocalyptic number.

It is an amenable number.

23636321 is a deficient number, since it is larger than the sum of its proper divisors (1).

23636321 is an equidigital number, since it uses as much as digits as its factorization.

23636321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 26.

The square root of 23636321 is about 4861.7199631406. The cubic root of 23636321 is about 286.9855035230.

Adding to 23636321 its reverse (12363632), we get a palindrome (35999953).

The spelling of 23636321 in words is "twenty-three million, six hundred thirty-six thousand, three hundred twenty-one".