211030207 has 4 divisors (see below), whose sum is σ = 222137080. Its totient is φ = 199923336.

The previous prime is 211030189. The next prime is 211030219. The reversal of 211030207 is 702030112.

It is a happy number.

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 211030207 - 2¹¹ = 211028159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211030297) 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 in 3 ways as a sum of consecutive naturals, for example, 5553408 + ... + 5553445.

It is an arithmetic number, because the mean of its divisors is an integer number (55534270).

Almost surely, 2^211030207 is an apocalyptic number.

211030207 is a deficient number, since it is larger than the sum of its proper divisors (11106873).

211030207 is a wasteful number, since it uses less digits than its factorization.

211030207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11106872.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 211030207 is about 14526.8787769431. The cubic root of 211030207 is about 595.3625895311.

Adding to 211030207 its reverse (702030112), we get a palindrome (913060319).

The spelling of 211030207 in words is "two hundred eleven million, thirty thousand, two hundred seven".