1313224321231 has 2 divisors, whose sum is σ = 1313224321232. Its totient is φ = 1313224321230.

The previous prime is 1313224321223. The next prime is 1313224321289. The reversal of 1313224321231 is 1321234223131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1313224321231 - 2³ = 1313224321223 is a prime.

It is a super-2 number, since 2×1313224321231² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1313224321231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313224321631) 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, 656612160615 + 656612160616.

It is an arithmetic number, because the mean of its divisors is an integer number (656612160616).

Almost surely, 2^{1313224321231} is an apocalyptic number.

1313224321231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313224321231 is an equidigital number, since it uses as much as digits as its factorization.

1313224321231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 28.

Adding to 1313224321231 its reverse (1321234223131), we get a palindrome (2634458544362).

The spelling of 1313224321231 in words is "one trillion, three hundred thirteen billion, two hundred twenty-four million, three hundred twenty-one thousand, two hundred thirty-one".