211385 has 8 divisors (see below), whose sum is σ = 257856. Its totient is φ = 166320.

The previous prime is 211373. The next prime is 211403. The reversal of 211385 is 583112.

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

It is not a de Polignac number, because 211385 - 2⁴ = 211369 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 20 + ... + 650.

It is an arithmetic number, because the mean of its divisors is an integer number (32232).

2²¹¹³⁸⁵ is an apocalyptic number.

It is an amenable number.

211385 is a deficient number, since it is larger than the sum of its proper divisors (46471).

211385 is an equidigital number, since it uses as much as digits as its factorization.

211385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703.

The product of its digits is 240, while the sum is 20.

The square root of 211385 is about 459.7662449550. The cubic root of 211385 is about 59.5696052397.

Adding to 211385 its reverse (583112), we get a palindrome (794497).

The spelling of 211385 in words is "two hundred eleven thousand, three hundred eighty-five".