243113503409 has 12 divisors (see below), whose sum is σ = 282473523072. Its totient is φ = 204966866160.

The previous prime is 243113503343. The next prime is 243113503417. The reversal of 243113503409 is 904305311342.

243113503409 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 243113503409 - 2¹² = 243113499313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243113503439) 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 11 ways as a sum of consecutive naturals, for example, 4640777 + ... + 4692870.

It is an arithmetic number, because the mean of its divisors is an integer number (23539460256).

Almost surely, 2^243113503409 is an apocalyptic number.

It is an amenable number.

243113503409 is a deficient number, since it is larger than the sum of its proper divisors (39360019663).

243113503409 is an frugal number, since it uses more digits than its factorization.

243113503409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9333776 (or 9333715 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 35.

The spelling of 243113503409 in words is "two hundred forty-three billion, one hundred thirteen million, five hundred three thousand, four hundred nine".