1320613111 has 2 divisors, whose sum is σ = 1320613112. Its totient is φ = 1320613110.

The previous prime is 1320613093. The next prime is 1320613117. The reversal of 1320613111 is 1113160231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1320613111 - 2¹¹ = 1320611063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320613117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660306555 + 660306556.

It is an arithmetic number, because the mean of its divisors is an integer number (660306556).

Almost surely, 2^1320613111 is an apocalyptic number.

1320613111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320613111 is an equidigital number, since it uses as much as digits as its factorization.

1320613111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 1320613111 is about 36340.2409320577. The cubic root of 1320613111 is about 1097.1311223409.

Adding to 1320613111 its reverse (1113160231), we get a palindrome (2433773342).

The spelling of 1320613111 in words is "one billion, three hundred twenty million, six hundred thirteen thousand, one hundred eleven".