243136324313 has 2 divisors, whose sum is σ = 243136324314. Its totient is φ = 243136324312.

The previous prime is 243136324309. The next prime is 243136324339. The reversal of 243136324313 is 313423631342.

243136324313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 164212973824 + 78923350489 = 405232^2 + 280933^2 .

It is a cyclic number.

It is not a de Polignac number, because 243136324313 - 2² = 243136324309 is a prime.

It is not a weakly prime, because it can be changed into another prime (243136324303) 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 as a sum of consecutive naturals, namely, 121568162156 + 121568162157.

It is an arithmetic number, because the mean of its divisors is an integer number (121568162157).

Almost surely, 2^243136324313 is an apocalyptic number.

It is an amenable number.

243136324313 is a deficient number, since it is larger than the sum of its proper divisors (1).

243136324313 is an equidigital number, since it uses as much as digits as its factorization.

243136324313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 35.

Adding to 243136324313 its reverse (313423631342), we get a palindrome (556559955655).

The spelling of 243136324313 in words is "two hundred forty-three billion, one hundred thirty-six million, three hundred twenty-four thousand, three hundred thirteen".