23402443 has 4 divisors (see below), whose sum is σ = 23414248. Its totient is φ = 23390640.

The previous prime is 23402437. The next prime is 23402447. The reversal of 23402443 is 34420432.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 23402443 - 2⁵ = 23402411 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (23402447) 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, 2121 + ... + 7162.

It is an arithmetic number, because the mean of its divisors is an integer number (5853562).

Almost surely, 2^23402443 is an apocalyptic number.

23402443 is a deficient number, since it is larger than the sum of its proper divisors (11805).

23402443 is an equidigital number, since it uses as much as digits as its factorization.

23402443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11804.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 23402443 is about 4837.6071564359. The cubic root of 23402443 is about 286.0358041145.

Adding to 23402443 its reverse (34420432), we get a palindrome (57822875).

The spelling of 23402443 in words is "twenty-three million, four hundred two thousand, four hundred forty-three".