1320323219 has 2 divisors, whose sum is σ = 1320323220. Its totient is φ = 1320323218.

The previous prime is 1320323203. The next prime is 1320323231. The reversal of 1320323219 is 9123230231.

It is a strong prime.

It is an emirp because it is prime and its reverse (9123230231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1320323219 - 2⁴ = 1320323203 is a prime.

It is a super-2 number, since 2×1320323219² = 3486506805261043922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1320323269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660161609 + 660161610.

It is an arithmetic number, because the mean of its divisors is an integer number (660161610).

Almost surely, 2^1320323219 is an apocalyptic number.

1320323219 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320323219 is an equidigital number, since it uses as much as digits as its factorization.

1320323219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 1320323219 is about 36336.2521319962. The cubic root of 1320323219 is about 1097.0508382144.

The spelling of 1320323219 in words is "one billion, three hundred twenty million, three hundred twenty-three thousand, two hundred nineteen".