1320023313 has 12 divisors (see below), whose sum is σ = 2179086208. Its totient is φ = 754299000.

The previous prime is 1320023281. The next prime is 1320023377. The reversal of 1320023313 is 3133200231.

It is not a de Polignac number, because 1320023313 - 2⁵ = 1320023281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320022313) 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 11 ways as a sum of consecutive naturals, for example, 10476313 + ... + 10476438.

Almost surely, 2^1320023313 is an apocalyptic number.

It is an amenable number.

1320023313 is a deficient number, since it is larger than the sum of its proper divisors (859062895).

1320023313 is a wasteful number, since it uses less digits than its factorization.

1320023313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20952764 (or 20952761 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 1320023313 is about 36332.1250823565. The cubic root of 1320023313 is about 1096.9677683927.

Adding to 1320023313 its reverse (3133200231), we get a palindrome (4453223544).

The spelling of 1320023313 in words is "one billion, three hundred twenty million, twenty-three thousand, three hundred thirteen".