211340166 has 16 divisors (see below), whose sum is σ = 423788544. Its totient is φ = 70262024.

The previous prime is 211340149. The next prime is 211340167. The reversal of 211340166 is 661043112.

211340166 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211340167) 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 7 ways as a sum of consecutive naturals, for example, 43686 + ... + 48281.

It is an arithmetic number, because the mean of its divisors is an integer number (26486784).

Almost surely, 2^211340166 is an apocalyptic number.

211340166 is an abundant number, since it is smaller than the sum of its proper divisors (212448378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211340166 is a wasteful number, since it uses less digits than its factorization.

211340166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92355.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 211340166 is about 14537.5433275365. The cubic root of 211340166 is about 595.6539344212.

Adding to 211340166 its reverse (661043112), we get a palindrome (872383278).

The spelling of 211340166 in words is "two hundred eleven million, three hundred forty thousand, one hundred sixty-six".