1320323113 has 4 divisors (see below), whose sum is σ = 1333141888. Its totient is φ = 1307504340.

The previous prime is 1320323023. The next prime is 1320323141. The reversal of 1320323113 is 3113230231.

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: 3113230231 = 21419 ⋅145349.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1320323113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320363113) by changing a digit.

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, 6409233 + ... + 6409438.

It is an arithmetic number, because the mean of its divisors is an integer number (333285472).

Almost surely, 2^1320323113 is an apocalyptic number.

It is an amenable number.

1320323113 is a deficient number, since it is larger than the sum of its proper divisors (12818775).

1320323113 is a wasteful number, since it uses less digits than its factorization.

1320323113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12818774.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1320323113 is about 36336.2506733978. The cubic root of 1320323113 is about 1097.0508088561.

Adding to 1320323113 its reverse (3113230231), we get a palindrome (4433553344).

The spelling of 1320323113 in words is "one billion, three hundred twenty million, three hundred twenty-three thousand, one hundred thirteen".