1320312011 has 2 divisors, whose sum is σ = 1320312012. Its totient is φ = 1320312010.

The previous prime is 1320311977. The next prime is 1320312017. The reversal of 1320312011 is 1102130231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1320312011 - 2¹⁸ = 1320049867 is a prime.

It is not a weakly prime, because it can be changed into another prime (1320312017) 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, 660156005 + 660156006.

It is an arithmetic number, because the mean of its divisors is an integer number (660156006).

Almost surely, 2^1320312011 is an apocalyptic number.

1320312011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320312011 is an equidigital number, since it uses as much as digits as its factorization.

1320312011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1320312011 is about 36336.0979055264. The cubic root of 1320312011 is about 1097.0477339794.

Adding to 1320312011 its reverse (1102130231), we get a palindrome (2422442242).

The spelling of 1320312011 in words is "one billion, three hundred twenty million, three hundred twelve thousand, eleven".