2109311 has 2 divisors, whose sum is σ = 2109312. Its totient is φ = 2109310.

The previous prime is 2109293. The next prime is 2109329. The reversal of 2109311 is 1139012.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (2109293) and next prime (2109329).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2109311 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2109311.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2109391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1054655 + 1054656.

It is an arithmetic number, because the mean of its divisors is an integer number (1054656).

2^2109311 is an apocalyptic number.

2109311 is a deficient number, since it is larger than the sum of its proper divisors (1).

2109311 is an equidigital number, since it uses as much as digits as its factorization.

2109311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 2109311 is about 1452.3467216887. The cubic root of 2109311 is about 128.2468989392.

Subtracting from 2109311 its reverse (1139012), we obtain a cube (970299 = 99³).

The spelling of 2109311 in words is "two million, one hundred nine thousand, three hundred eleven".