2112311 has 4 divisors (see below), whose sum is σ = 2131800. Its totient is φ = 2092824.

The previous prime is 2112307. The next prime is 2112323. The reversal of 2112311 is 1132112.

2112311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2112311 - 2² = 2112307 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2112292 and 2112301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112511) 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 in 3 ways as a sum of consecutive naturals, for example, 9581 + ... + 9798.

It is an arithmetic number, because the mean of its divisors is an integer number (532950).

2^2112311 is an apocalyptic number.

2112311 is a deficient number, since it is larger than the sum of its proper divisors (19489).

2112311 is a wasteful number, since it uses less digits than its factorization.

2112311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19488.

The product of its digits is 12, while the sum is 11.

The square root of 2112311 is about 1453.3791659440. The cubic root of 2112311 is about 128.3076705118.

Adding to 2112311 its reverse (1132112), we get a palindrome (3244423).

The spelling of 2112311 in words is "two million, one hundred twelve thousand, three hundred eleven".