11966311 has 4 divisors (see below), whose sum is σ = 13675792. Its totient is φ = 10256832.

The previous prime is 11966293. The next prime is 11966323. The reversal of 11966311 is 11366911.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11966311 - 2¹³ = 11958119 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11966311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11966111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 854730 + ... + 854743.

It is an arithmetic number, because the mean of its divisors is an integer number (3418948).

Almost surely, 2^11966311 is an apocalyptic number.

11966311 is a deficient number, since it is larger than the sum of its proper divisors (1709481).

11966311 is an equidigital number, since it uses as much as digits as its factorization.

11966311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1709480.

The product of its digits is 972, while the sum is 28.

The square root of 11966311 is about 3459.2356092062. The cubic root of 11966311 is about 228.7284017152.

It can be divided in two parts, 119 and 66311, that added together give a triangular number (66430 = T₃₆₄).

The spelling of 11966311 in words is "eleven million, nine hundred sixty-six thousand, three hundred eleven".