213206 has 16 divisors (see below), whose sum is σ = 371616. Its totient is φ = 89856.

The previous prime is 213203. The next prime is 213209. The reversal of 213206 is 602312.

It is an interprime number because it is at equal distance from previous prime (213203) and next prime (213209).

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1280 + ... + 1436.

It is an arithmetic number, because the mean of its divisors is an integer number (23226).

2²¹³²⁰⁶ is an apocalyptic number.

213206 is a deficient number, since it is larger than the sum of its proper divisors (158410).

213206 is a wasteful number, since it uses less digits than its factorization.

213206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 213206 is about 461.7423524001. The cubic root of 213206 is about 59.7401727505.

Adding to 213206 its reverse (602312), we get a palindrome (815518).

The spelling of 213206 in words is "two hundred thirteen thousand, two hundred six".