4243440120313 has 2 divisors, whose sum is σ = 4243440120314. Its totient is φ = 4243440120312.

The previous prime is 4243440120287. The next prime is 4243440120331. The reversal of 4243440120313 is 3130210443424.

Together with next prime (4243440120331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4062107228089 + 181332892224 = 2015467^2 + 425832^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4243440120313 is a prime.

It is not a weakly prime, because it can be changed into another prime (4243440120383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2121720060156 + 2121720060157.

It is an arithmetic number, because the mean of its divisors is an integer number (2121720060157).

Almost surely, 2^{4243440120313} is an apocalyptic number.

It is an amenable number.

4243440120313 is a deficient number, since it is larger than the sum of its proper divisors (1).

4243440120313 is an equidigital number, since it uses as much as digits as its factorization.

4243440120313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 4243440120313 its reverse (3130210443424), we get a palindrome (7373650563737).

The spelling of 4243440120313 in words is "four trillion, two hundred forty-three billion, four hundred forty million, one hundred twenty thousand, three hundred thirteen".