1320223013 has 4 divisors (see below), whose sum is σ = 1321494720. Its totient is φ = 1318951308.

The previous prime is 1320222989. The next prime is 1320223019. The reversal of 1320223013 is 3103220231.

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.

It is a cyclic number.

It is not a de Polignac number, because 1320223013 - 2⁶ = 1320222949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1320222982 and 1320223000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320223019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 634295 + ... + 636372.

It is an arithmetic number, because the mean of its divisors is an integer number (330373680).

Almost surely, 2^1320223013 is an apocalyptic number.

It is an amenable number.

1320223013 is a deficient number, since it is larger than the sum of its proper divisors (1271707).

1320223013 is a wasteful number, since it uses less digits than its factorization.

1320223013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271706.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 1320223013 is about 36334.8732349516. The cubic root of 1320223013 is about 1097.0230839353.

Adding to 1320223013 its reverse (3103220231), we get a palindrome (4423443244).

The spelling of 1320223013 in words is "one billion, three hundred twenty million, two hundred twenty-three thousand, thirteen".