243347823 has 6 divisors (see below), whose sum is σ = 351502424. Its totient is φ = 162231876.

The previous prime is 243347813. The next prime is 243347831. The reversal of 243347823 is 328743342.

243347823 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 243347823 - 2⁹ = 243347311 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 (243347813) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13519315 + ... + 13519332.

Almost surely, 2^243347823 is an apocalyptic number.

243347823 is a deficient number, since it is larger than the sum of its proper divisors (108154601).

243347823 is a wasteful number, since it uses less digits than its factorization.

243347823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27038653 (or 27038650 counting only the distinct ones).

The product of its digits is 96768, while the sum is 36.

The square root of 243347823 is about 15599.6097066561. The cubic root of 243347823 is about 624.3227420063.

The spelling of 243347823 in words is "two hundred forty-three million, three hundred forty-seven thousand, eight hundred twenty-three".