211814 has 4 divisors (see below), whose sum is σ = 317724. Its totient is φ = 105906.

The previous prime is 211811. The next prime is 211817. The reversal of 211814 is 418112.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (211811) and next prime (211817).

It is a junction number, because it is equal to n+sod(n) for n = 211792 and 211801.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 211814.

It is not an unprimeable number, because it can be changed into a prime (211811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52952 + ... + 52955.

It is an arithmetic number, because the mean of its divisors is an integer number (79431).

2²¹¹⁸¹⁴ is an apocalyptic number.

211814 is a deficient number, since it is larger than the sum of its proper divisors (105910).

211814 is a wasteful number, since it uses less digits than its factorization.

211814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105909.

The product of its digits is 64, while the sum is 17.

The square root of 211814 is about 460.2325499136. The cubic root of 211814 is about 59.6098762967.

Adding to 211814 its reverse (418112), we get a palindrome (629926).

The spelling of 211814 in words is "two hundred eleven thousand, eight hundred fourteen".