211434 has 16 divisors (see below), whose sum is σ = 427680. Its totient is φ = 69680.

The previous prime is 211433. The next prime is 211441. The reversal of 211434 is 434112.

It is a Curzon number.

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 211434.

It is not an unprimeable number, because it can be changed into a prime (211433) 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 in 7 ways as a sum of consecutive naturals, for example, 652 + ... + 920.

It is an arithmetic number, because the mean of its divisors is an integer number (26730).

2²¹¹⁴³⁴ is an apocalyptic number.

211434 is an abundant number, since it is smaller than the sum of its proper divisors (216246).

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

211434 is a wasteful number, since it uses less digits than its factorization.

211434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405.

The product of its digits is 96, while the sum is 15.

The square root of 211434 is about 459.8195298158. The cubic root of 211434 is about 59.5742077189.

Adding to 211434 its reverse (434112), we get a palindrome (645546).

The spelling of 211434 in words is "two hundred eleven thousand, four hundred thirty-four".