23402243 has 4 divisors (see below), whose sum is σ = 24633960. Its totient is φ = 22170528.

The previous prime is 23402231. The next prime is 23402257. The reversal of 23402243 is 34220432.

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 23402243 - 2¹² = 23398147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23402213) 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, 615830 + ... + 615867.

It is an arithmetic number, because the mean of its divisors is an integer number (6158490).

Almost surely, 2^23402243 is an apocalyptic number.

23402243 is a deficient number, since it is larger than the sum of its proper divisors (1231717).

23402243 is a wasteful number, since it uses less digits than its factorization.

23402243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231716.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 23402243 is about 4837.5864850150. The cubic root of 23402243 is about 286.0349892804.

Adding to 23402243 its reverse (34220432), we get a palindrome (57622675).

The spelling of 23402243 in words is "twenty-three million, four hundred two thousand, two hundred forty-three".