243243123435 has 192 divisors, whose sum is σ = 479322095616. Its totient is φ = 113323392000.

The previous prime is 243243123311. The next prime is 243243123443. The reversal of 243243123435 is 534321342342.

243243123435 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 243243123435 - 2¹⁵ = 243243090667 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243243123435.

It is an unprimeable number.

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 191 ways as a sum of consecutive naturals, for example, 103462510 + ... + 103464860.

It is an arithmetic number, because the mean of its divisors is an integer number (2496469248).

Almost surely, 2^243243123435 is an apocalyptic number.

243243123435 is a deficient number, since it is larger than the sum of its proper divisors (236078972181).

243243123435 is a wasteful number, since it uses less digits than its factorization.

243243123435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2546 (or 2543 counting only the distinct ones).

The product of its digits is 207360, while the sum is 36.

Adding to 243243123435 its reverse (534321342342), we get a palindrome (777564465777).

The spelling of 243243123435 in words is "two hundred forty-three billion, two hundred forty-three million, one hundred twenty-three thousand, four hundred thirty-five".