1320323311 has 2 divisors, whose sum is σ = 1320323312. Its totient is φ = 1320323310.

The previous prime is 1320323297. The next prime is 1320323317. The reversal of 1320323311 is 1133230231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1320323311 - 2¹¹ = 1320321263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320323317) 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 as a sum of consecutive naturals, namely, 660161655 + 660161656.

It is an arithmetic number, because the mean of its divisors is an integer number (660161656).

Almost surely, 2^1320323311 is an apocalyptic number.

1320323311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320323311 is an equidigital number, since it uses as much as digits as its factorization.

1320323311 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1320323311 is about 36336.2533979495. The cubic root of 1320323311 is about 1097.0508636952.

Adding to 1320323311 its reverse (1133230231), we get a palindrome (2453553542).

The spelling of 1320323311 in words is "one billion, three hundred twenty million, three hundred twenty-three thousand, three hundred eleven".