243423230443223 has 4 divisors (see below), whose sum is σ = 243508313714328. Its totient is φ = 243338147172120.

The previous prime is 243423230443213. The next prime is 243423230443231. The reversal of 243423230443223 is 322344032324342.

It is a happy number.

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 243423230443223 - 2³⁸ = 243148352536279 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 (243423230443213) 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, 42541631261 + ... + 42541636982.

It is an arithmetic number, because the mean of its divisors is an integer number (60877078428582).

Almost surely, 2^{243423230443223} is an apocalyptic number.

243423230443223 is a deficient number, since it is larger than the sum of its proper divisors (85083271105).

243423230443223 is an equidigital number, since it uses as much as digits as its factorization.

243423230443223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85083271104.

The product of its (nonzero) digits is 1990656, while the sum is 41.

Adding to 243423230443223 its reverse (322344032324342), we get a palindrome (565767262767565).

The spelling of 243423230443223 in words is "two hundred forty-three trillion, four hundred twenty-three billion, two hundred thirty million, four hundred forty-three thousand, two hundred twenty-three".