1313221424 has 20 divisors (see below), whose sum is σ = 2576576160. Its totient is φ = 648298560.

The previous prime is 1313221397. The next prime is 1313221451. The reversal of 1313221424 is 4241223131.

It is an interprime number because it is at equal distance from previous prime (1313221397) and next prime (1313221451).

It is a self number, because there is not a number n which added to its sum of digits gives 1313221424.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 518207 + ... + 520734.

It is an arithmetic number, because the mean of its divisors is an integer number (128828808).

Almost surely, 2^1313221424 is an apocalyptic number.

It is an amenable number.

1313221424 is a deficient number, since it is larger than the sum of its proper divisors (1263354736).

1313221424 is a wasteful number, since it uses less digits than its factorization.

1313221424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039028 (or 1039022 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

The square root of 1313221424 is about 36238.3970947944. The cubic root of 1313221424 is about 1095.0803507824.

Adding to 1313221424 its reverse (4241223131), we get a palindrome (5554444555).

The spelling of 1313221424 in words is "one billion, three hundred thirteen million, two hundred twenty-one thousand, four hundred twenty-four".