243113311349 has 2 divisors, whose sum is σ = 243113311350. Its totient is φ = 243113311348.

The previous prime is 243113311327. The next prime is 243113311351. The reversal of 243113311349 is 943113311342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 143205480625 + 99907830724 = 378425^2 + 316082^2 .

It is a cyclic number.

It is not a de Polignac number, because 243113311349 - 2²⁴ = 243096534133 is a prime.

Together with 243113311351, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243113311849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121556655674 + 121556655675.

It is an arithmetic number, because the mean of its divisors is an integer number (121556655675).

Almost surely, 2^243113311349 is an apocalyptic number.

It is an amenable number.

243113311349 is a deficient number, since it is larger than the sum of its proper divisors (1).

243113311349 is an equidigital number, since it uses as much as digits as its factorization.

243113311349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 35.

The spelling of 243113311349 in words is "two hundred forty-three billion, one hundred thirteen million, three hundred eleven thousand, three hundred forty-nine".