211314065 has 16 divisors (see below), whose sum is σ = 258371856. Its totient is φ = 165868800.

The previous prime is 211314043. The next prime is 211314071. The reversal of 211314065 is 560413112.

It can be written as a sum of positive squares in 8 ways, for example, as 37258816 + 174055249 = 6104^2 + 13193^2 .

It is a de Polignac number, because none of the positive numbers 2^k-211314065 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 211314065.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198635 + ... + 199695.

It is an arithmetic number, because the mean of its divisors is an integer number (16148241).

Almost surely, 2^211314065 is an apocalyptic number.

It is an amenable number.

211314065 is a deficient number, since it is larger than the sum of its proper divisors (47057791).

211314065 is a wasteful number, since it uses less digits than its factorization.

211314065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1780.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 211314065 is about 14536.6455896813. The cubic root of 211314065 is about 595.6294118648.

Adding to 211314065 its reverse (560413112), we get a palindrome (771727177).

The spelling of 211314065 in words is "two hundred eleven million, three hundred fourteen thousand, sixty-five".