23663143 has 4 divisors (see below), whose sum is σ = 27043600. Its totient is φ = 20282688.

The previous prime is 23663141. The next prime is 23663149. The reversal of 23663143 is 34136632.

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

It is a cyclic number.

It is not a de Polignac number, because 23663143 - 2¹ = 23663141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23663141) 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 in 3 ways as a sum of consecutive naturals, for example, 1690218 + ... + 1690231.

It is an arithmetic number, because the mean of its divisors is an integer number (6760900).

Almost surely, 2^23663143 is an apocalyptic number.

23663143 is a deficient number, since it is larger than the sum of its proper divisors (3380457).

23663143 is an equidigital number, since it uses as much as digits as its factorization.

23663143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3380456.

The product of its digits is 7776, while the sum is 28.

The square root of 23663143 is about 4864.4776698018. The cubic root of 23663143 is about 287.0940175249.

Adding to 23663143 its reverse (34136632), we get a palindrome (57799775).

The spelling of 23663143 in words is "twenty-three million, six hundred sixty-three thousand, one hundred forty-three".