1320313223 has 4 divisors (see below), whose sum is σ = 1322058120. Its totient is φ = 1318568328.

The previous prime is 1320313153. The next prime is 1320313243. The reversal of 1320313223 is 3223130231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1320313223 - 2¹⁰ = 1320312199 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1320313195 and 1320313204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320313243) 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, 871313 + ... + 872826.

It is an arithmetic number, because the mean of its divisors is an integer number (330514530).

Almost surely, 2^1320313223 is an apocalyptic number.

1320313223 is a deficient number, since it is larger than the sum of its proper divisors (1744897).

1320313223 is an equidigital number, since it uses as much as digits as its factorization.

1320313223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1744896.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 1320313223 is about 36336.1145831527. The cubic root of 1320313223 is about 1097.0480696630.

Adding to 1320313223 its reverse (3223130231), we get a palindrome (4543443454).

The spelling of 1320313223 in words is "one billion, three hundred twenty million, three hundred thirteen thousand, two hundred twenty-three".