811112 has 16 divisors (see below), whose sum is σ = 1550340. Its totient is φ = 397696.

The previous prime is 811099. The next prime is 811123. The reversal of 811112 is 211118.

It can be written as a sum of positive squares in 2 ways, for example, as 729316 + 81796 = 854^2 + 286^2 .

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

811112 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 533 + ... + 1380.

2⁸¹¹¹¹² is an apocalyptic number.

It is an amenable number.

811112 is a deficient number, since it is larger than the sum of its proper divisors (739228).

811112 is a wasteful number, since it uses less digits than its factorization.

811112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1972 (or 1968 counting only the distinct ones).

The product of its digits is 16, while the sum is 14.

The square root of 811112 is about 900.6175658958. The cubic root of 811112 is about 93.2596129883.

The spelling of 811112 in words is "eight hundred eleven thousand, one hundred twelve".