213835 has 4 divisors (see below), whose sum is σ = 256608. Its totient is φ = 171064.

The previous prime is 213833. The next prime is 213847. The reversal of 213835 is 538312.

213835 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 213835 - 2¹ = 213833 is a prime.

It is a super-3 number, since 3×213835³ = 29333077361873625, which contains 333 as substring.

It is a Duffinian number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (213833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21379 + ... + 21388.

It is an arithmetic number, because the mean of its divisors is an integer number (64152).

2²¹³⁸³⁵ is an apocalyptic number.

213835 is a deficient number, since it is larger than the sum of its proper divisors (42773).

213835 is an equidigital number, since it uses as much as digits as its factorization.

213835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42772.

The product of its digits is 720, while the sum is 22.

The square root of 213835 is about 462.4229665577. The cubic root of 213835 is about 59.7988635258.

The spelling of 213835 in words is "two hundred thirteen thousand, eight hundred thirty-five".