243343320423 has 16 divisors (see below), whose sum is σ = 372428129280. Its totient is φ = 138446103456.

The previous prime is 243343320413. The next prime is 243343320457. The reversal of 243343320423 is 324023343342.

It is not a de Polignac number, because 243343320423 - 2⁹ = 243343319911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243343320413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25296015 + ... + 25305632.

It is an arithmetic number, because the mean of its divisors is an integer number (23276758080).

Almost surely, 2^243343320423 is an apocalyptic number.

243343320423 is a deficient number, since it is larger than the sum of its proper divisors (129084808857).

243343320423 is a wasteful number, since it uses less digits than its factorization.

243343320423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50601886.

The product of its (nonzero) digits is 124416, while the sum is 33.

Adding to 243343320423 its reverse (324023343342), we get a palindrome (567366663765).

The spelling of 243343320423 in words is "two hundred forty-three billion, three hundred forty-three million, three hundred twenty thousand, four hundred twenty-three".