243144361013 has 2 divisors, whose sum is σ = 243144361014. Its totient is φ = 243144361012.

The previous prime is 243144360937. The next prime is 243144361021. The reversal of 243144361013 is 310163441342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153148560964 + 89995800049 = 391342^2 + 299993^2 .

It is a cyclic number.

It is not a de Polignac number, because 243144361013 - 2²⁸ = 242875925557 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243144361043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121572180506 + 121572180507.

It is an arithmetic number, because the mean of its divisors is an integer number (121572180507).

Almost surely, 2^243144361013 is an apocalyptic number.

It is an amenable number.

243144361013 is a deficient number, since it is larger than the sum of its proper divisors (1).

243144361013 is an equidigital number, since it uses as much as digits as its factorization.

243144361013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 32.

The spelling of 243144361013 in words is "two hundred forty-three billion, one hundred forty-four million, three hundred sixty-one thousand, thirteen".