23735813 has 2 divisors, whose sum is σ = 23735814. Its totient is φ = 23735812.

The previous prime is 23735809. The next prime is 23735821. The reversal of 23735813 is 31853732.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21836929 + 1898884 = 4673^2 + 1378^2 .

It is a cyclic number.

It is not a de Polignac number, because 23735813 - 2² = 23735809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23735813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23734813) 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, 11867906 + 11867907.

It is an arithmetic number, because the mean of its divisors is an integer number (11867907).

Almost surely, 2^23735813 is an apocalyptic number.

It is an amenable number.

23735813 is a deficient number, since it is larger than the sum of its proper divisors (1).

23735813 is an equidigital number, since it uses as much as digits as its factorization.

23735813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 32.

The square root of 23735813 is about 4871.9413994834. The cubic root of 23735813 is about 287.3876077381.

The spelling of 23735813 in words is "twenty-three million, seven hundred thirty-five thousand, eight hundred thirteen".