1313224639 has 2 divisors, whose sum is σ = 1313224640. Its totient is φ = 1313224638.

The previous prime is 1313224607. The next prime is 1313224669. The reversal of 1313224639 is 9364223131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1313224639 - 2⁵ = 1313224607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313224669) 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, 656612319 + 656612320.

It is an arithmetic number, because the mean of its divisors is an integer number (656612320).

Almost surely, 2^1313224639 is an apocalyptic number.

1313224639 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313224639 is an equidigital number, since it uses as much as digits as its factorization.

1313224639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 34.

The square root of 1313224639 is about 36238.4414537932. The cubic root of 1313224639 is about 1095.0812444323.

The spelling of 1313224639 in words is "one billion, three hundred thirteen million, two hundred twenty-four thousand, six hundred thirty-nine".