1311166011 has 8 divisors (see below), whose sum is σ = 1760799040. Its totient is φ = 867821832.

The previous prime is 1311165983. The next prime is 1311166033. The reversal of 1311166011 is 1106611131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1311166011 - 2⁵ = 1311165979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311066011) 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 in 7 ways as a sum of consecutive naturals, for example, 1571725 + ... + 1572558.

It is an arithmetic number, because the mean of its divisors is an integer number (220099880).

Almost surely, 2^1311166011 is an apocalyptic number.

1311166011 is a deficient number, since it is larger than the sum of its proper divisors (449633029).

1311166011 is a wasteful number, since it uses less digits than its factorization.

1311166011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3144425.

The product of its (nonzero) digits is 108, while the sum is 21.

The square root of 1311166011 is about 36210.0263877286. The cubic root of 1311166011 is about 1094.5087239707.

Adding to 1311166011 its reverse (1106611131), we get a palindrome (2417777142).

The spelling of 1311166011 in words is "one billion, three hundred eleven million, one hundred sixty-six thousand, eleven".