243724112011 has 2 divisors, whose sum is σ = 243724112012. Its totient is φ = 243724112010.

The previous prime is 243724111997. The next prime is 243724112033. The reversal of 243724112011 is 110211427342.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243724112011 - 2³⁵ = 209364373643 is a prime.

It is not a weakly prime, because it can be changed into another prime (243724110011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121862056005 + 121862056006.

It is an arithmetic number, because the mean of its divisors is an integer number (121862056006).

Almost surely, 2^243724112011 is an apocalyptic number.

243724112011 is a deficient number, since it is larger than the sum of its proper divisors (1).

243724112011 is an equidigital number, since it uses as much as digits as its factorization.

243724112011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 28.

Adding to 243724112011 its reverse (110211427342), we get a palindrome (353935539353).

The spelling of 243724112011 in words is "two hundred forty-three billion, seven hundred twenty-four million, one hundred twelve thousand, eleven".