1320111329 has 2 divisors, whose sum is σ = 1320111330. Its totient is φ = 1320111328.

The previous prime is 1320111301. The next prime is 1320111337. The reversal of 1320111329 is 9231110231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 927080704 + 393030625 = 30448^2 + 19825^2 .

It is a cyclic number.

It is not a de Polignac number, because 1320111329 - 2⁸ = 1320111073 is a prime.

It is not a weakly prime, because it can be changed into another prime (1320111379) 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, 660055664 + 660055665.

It is an arithmetic number, because the mean of its divisors is an integer number (660055665).

Almost surely, 2^1320111329 is an apocalyptic number.

It is an amenable number.

1320111329 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320111329 is an equidigital number, since it uses as much as digits as its factorization.

1320111329 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 23.

The square root of 1320111329 is about 36333.3363318042. The cubic root of 1320111329 is about 1096.9921489139.

The spelling of 1320111329 in words is "one billion, three hundred twenty million, one hundred eleven thousand, three hundred twenty-nine".