211314109 has 2 divisors, whose sum is σ = 211314110. Its totient is φ = 211314108.

The previous prime is 211314107. The next prime is 211314113. The reversal of 211314109 is 901413112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 174372025 + 36942084 = 13205^2 + 6078^2 .

It is a cyclic number.

It is not a de Polignac number, because 211314109 - 2¹ = 211314107 is a prime.

Together with 211314107, it forms a pair of twin primes.

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 211314109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211314107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105657054 + 105657055.

It is an arithmetic number, because the mean of its divisors is an integer number (105657055).

Almost surely, 2^211314109 is an apocalyptic number.

It is an amenable number.

211314109 is a deficient number, since it is larger than the sum of its proper divisors (1).

211314109 is an equidigital number, since it uses as much as digits as its factorization.

211314109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 211314109 is about 14536.6471030977. The cubic root of 211314109 is about 595.6294532056.

The spelling of 211314109 in words is "two hundred eleven million, three hundred fourteen thousand, one hundred nine".