23133643 has 4 divisors (see below), whose sum is σ = 24913168. Its totient is φ = 21354120.

The previous prime is 23133641. The next prime is 23133647. The reversal of 23133643 is 34633132.

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 23133643 - 2¹ = 23133641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23133641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 889743 + ... + 889768.

It is an arithmetic number, because the mean of its divisors is an integer number (6228292).

Almost surely, 2^23133643 is an apocalyptic number.

23133643 is a deficient number, since it is larger than the sum of its proper divisors (1779525).

23133643 is a wasteful number, since it uses less digits than its factorization.

23133643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1779524.

The product of its digits is 3888, while the sum is 25.

The square root of 23133643 is about 4809.7445878134. The cubic root of 23133643 is about 284.9364503839.

Adding to 23133643 its reverse (34633132), we get a palindrome (57766775).

The spelling of 23133643 in words is "twenty-three million, one hundred thirty-three thousand, six hundred forty-three".