1313320109 has 4 divisors (see below), whose sum is σ = 1382442240. Its totient is φ = 1244197980.

The previous prime is 1313320093. The next prime is 1313320123. The reversal of 1313320109 is 9010233131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9010233131 = 3449 ⋅2612419.

It is a cyclic number.

It is not a de Polignac number, because 1313320109 - 2⁴ = 1313320093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313320189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34561037 + ... + 34561074.

It is an arithmetic number, because the mean of its divisors is an integer number (345610560).

Almost surely, 2^1313320109 is an apocalyptic number.

1313320109 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1313320109 is a deficient number, since it is larger than the sum of its proper divisors (69122131).

1313320109 is an equidigital number, since it uses as much as digits as its factorization.

1313320109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69122130.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 1313320109 is about 36239.7586774526. The cubic root of 1313320109 is about 1095.1077808602.

The spelling of 1313320109 in words is "one billion, three hundred thirteen million, three hundred twenty thousand, one hundred nine".