13313321243 has 2 divisors, whose sum is σ = 13313321244. Its totient is φ = 13313321242.

The previous prime is 13313321239. The next prime is 13313321291. The reversal of 13313321243 is 34212331331.

It is a weak prime.

It is an emirp because it is prime and its reverse (34212331331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13313321243 - 2² = 13313321239 is a prime.

It is not a weakly prime, because it can be changed into another prime (13313321213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6656660621 + 6656660622.

It is an arithmetic number, because the mean of its divisors is an integer number (6656660622).

Almost surely, 2^13313321243 is an apocalyptic number.

13313321243 is a deficient number, since it is larger than the sum of its proper divisors (1).

13313321243 is an equidigital number, since it uses as much as digits as its factorization.

13313321243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 26.

Adding to 13313321243 its reverse (34212331331), we get a palindrome (47525652574).

The spelling of 13313321243 in words is "thirteen billion, three hundred thirteen million, three hundred twenty-one thousand, two hundred forty-three".