1311114881 has 2 divisors, whose sum is σ = 1311114882. Its totient is φ = 1311114880.

The previous prime is 1311114823. The next prime is 1311114923. The reversal of 1311114881 is 1884111131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1213895281 + 97219600 = 34841^2 + 9860^2 .

It is a cyclic number.

It is not a de Polignac number, because 1311114881 - 2¹⁰ = 1311113857 is a prime.

It is a super-2 number, since 2×1311114881² = 3438044462359288322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1311114811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655557440 + 655557441.

It is an arithmetic number, because the mean of its divisors is an integer number (655557441).

Almost surely, 2^1311114881 is an apocalyptic number.

It is an amenable number.

1311114881 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311114881 is an equidigital number, since it uses as much as digits as its factorization.

1311114881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 768, while the sum is 29.

The square root of 1311114881 is about 36209.3203609236. The cubic root of 1311114881 is about 1094.4944966956.

The spelling of 1311114881 in words is "one billion, three hundred eleven million, one hundred fourteen thousand, eight hundred eighty-one".