1166311247 has 2 divisors, whose sum is σ = 1166311248. Its totient is φ = 1166311246.

The previous prime is 1166311199. The next prime is 1166311253. The reversal of 1166311247 is 7421136611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1166311247 - 2¹⁴ = 1166294863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1166311847) 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, 583155623 + 583155624.

It is an arithmetic number, because the mean of its divisors is an integer number (583155624).

Almost surely, 2^1166311247 is an apocalyptic number.

1166311247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166311247 is an equidigital number, since it uses as much as digits as its factorization.

1166311247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 32.

The square root of 1166311247 is about 34151.2993457057. The cubic root of 1166311247 is about 1052.6196859697.

Adding to 1166311247 its reverse (7421136611), we get a palindrome (8587447858).

The spelling of 1166311247 in words is "one billion, one hundred sixty-six million, three hundred eleven thousand, two hundred forty-seven".