243040010113 has 4 divisors (see below), whose sum is σ = 243664792020. Its totient is φ = 242415228208.

The previous prime is 243040010089. The next prime is 243040010117. The reversal of 243040010113 is 311010040342.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 104602436929 + 138437573184 = 323423^2 + 372072^2 .

It is a cyclic number.

It is not a de Polignac number, because 243040010113 - 2²¹ = 243037912961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243040010117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 312390370 + ... + 312391147.

It is an arithmetic number, because the mean of its divisors is an integer number (60916198005).

Almost surely, 2^243040010113 is an apocalyptic number.

It is an amenable number.

243040010113 is a deficient number, since it is larger than the sum of its proper divisors (624781907).

243040010113 is an equidigital number, since it uses as much as digits as its factorization.

243040010113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624781906.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 243040010113 its reverse (311010040342), we get a palindrome (554050050455).

The spelling of 243040010113 in words is "two hundred forty-three billion, forty million, ten thousand, one hundred thirteen".