23415243 has 4 divisors (see below), whose sum is σ = 31220328. Its totient is φ = 15610160.

The previous prime is 23415221. The next prime is 23415247. The reversal of 23415243 is 34251432.

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 23415243 - 2⁵ = 23415211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23415247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3902538 + ... + 3902543.

It is an arithmetic number, because the mean of its divisors is an integer number (7805082).

Almost surely, 2^23415243 is an apocalyptic number.

23415243 is a deficient number, since it is larger than the sum of its proper divisors (7805085).

23415243 is an equidigital number, since it uses as much as digits as its factorization.

23415243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7805084.

The product of its digits is 2880, while the sum is 24.

The square root of 23415243 is about 4838.9299436962. The cubic root of 23415243 is about 286.0879438418.

Adding to 23415243 its reverse (34251432), we get a palindrome (57666675).

The spelling of 23415243 in words is "twenty-three million, four hundred fifteen thousand, two hundred forty-three".