243234423243 has 24 divisors (see below), whose sum is σ = 404418560000. Its totient is φ = 137991158064.

The previous prime is 243234423191. The next prime is 243234423281. The reversal of 243234423243 is 342324432342.

243234423243 is a `hidden beast` number, since 2 + 4 + 323 + 4 + 4 + 2 + 324 + 3 = 666.

243234423243 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 243234423243 - 2¹⁰ = 243234422219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243234423198 and 243234423207.

It is not an unprimeable number, because it can be changed into a prime (243234423293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13879243 + ... + 13896756.

Almost surely, 2^243234423243 is an apocalyptic number.

243234423243 is a deficient number, since it is larger than the sum of its proper divisors (161184136757).

243234423243 is a wasteful number, since it uses less digits than its factorization.

243234423243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27776151 (or 27776148 counting only the distinct ones).

The product of its digits is 331776, while the sum is 36.

Adding to 243234423243 its reverse (342324432342), we get a palindrome (585558855585).

Subtracting 243234423243 from its reverse (342324432342), we obtain a palindrome (99090009099).

The spelling of 243234423243 in words is "two hundred forty-three billion, two hundred thirty-four million, four hundred twenty-three thousand, two hundred forty-three".