211982 has 8 divisors (see below), whose sum is σ = 322056. Its totient is φ = 104632.

The previous prime is 211979. The next prime is 211997. The reversal of 211982 is 289112.

211982 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473 + ... + 804.

It is an arithmetic number, because the mean of its divisors is an integer number (40257).

2²¹¹⁹⁸² is an apocalyptic number.

211982 is a deficient number, since it is larger than the sum of its proper divisors (110074).

211982 is a wasteful number, since it uses less digits than its factorization.

211982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1362.

The product of its digits is 288, while the sum is 23.

The square root of 211982 is about 460.4150301630. The cubic root of 211982 is about 59.6256319640.

The spelling of 211982 in words is "two hundred eleven thousand, nine hundred eighty-two".