1313321313 has 8 divisors (see below), whose sum is σ = 1762848000. Its totient is φ = 869671088.

The previous prime is 1313321309. The next prime is 1313321323. The reversal of 1313321313 is 3131233131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1313321313 - 2² = 1313321309 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1313321313.

It is not an unprimeable number, because it can be changed into a prime (1313321323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1468593 + ... + 1469486.

It is an arithmetic number, because the mean of its divisors is an integer number (220356000).

Almost surely, 2^1313321313 is an apocalyptic number.

It is an amenable number.

1313321313 is a deficient number, since it is larger than the sum of its proper divisors (449526687).

1313321313 is a wasteful number, since it uses less digits than its factorization.

1313321313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2938231.

The product of its digits is 486, while the sum is 21.

The square root of 1313321313 is about 36239.7752890384. The cubic root of 1313321313 is about 1095.1081155107.

Adding to 1313321313 its reverse (3131233131), we get a palindrome (4444554444).

The spelling of 1313321313 in words is "one billion, three hundred thirteen million, three hundred twenty-one thousand, three hundred thirteen".