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206213 = 789331
BaseRepresentation
bin110010010110000101
3101110212112
4302112011
523044323
64230405
71516130
oct622605
9343775
10206213
11130a27
129b405
1372b27
1455217
1541178
hex32585

206213 has 8 divisors (see below), whose sum is σ = 239040. Its totient is φ = 174240.

The previous prime is 206209. The next prime is 206221. The reversal of 206213 is 312602.

206213 is nontrivially palindromic in base 13.

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

It is a cyclic number.

It is not a de Polignac number, because 206213 - 22 = 206209 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206203) 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, 458 + ... + 788.

It is an arithmetic number, because the mean of its divisors is an integer number (29880).

2206213 is an apocalyptic number.

It is an amenable number.

206213 is a deficient number, since it is larger than the sum of its proper divisors (32827).

206213 is an equidigital number, since it uses as much as digits as its factorization.

206213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427.

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

The square root of 206213 is about 454.1068156282. The cubic root of 206213 is about 59.0797542509.

Adding to 206213 its reverse (312602), we get a palindrome (518815).

The spelling of 206213 in words is "two hundred six thousand, two hundred thirteen".

Divisors: 1 7 89 331 623 2317 29459 206213