17213 has 4 divisors (see below), whose sum is σ = 19680. Its totient is φ = 14748.
The previous prime is 17209. The next prime is 17231. The reversal of 17213 is 31271.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 17213 - 22 = 17209 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (17203) 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, 1223 + ... + 1236.
It is an arithmetic number, because the mean of its divisors is an integer number (4920).
217213 is an apocalyptic number.
It is an amenable number.
17213 is a deficient number, since it is larger than the sum of its proper divisors (2467).
17213 is an equidigital number, since it uses as much as digits as its factorization.
17213 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2466.
The product of its digits is 42, while the sum is 14.
The square root of 17213 is about 131.1983231600. The cubic root of 17213 is about 25.8197593158.
Subtracting from 17213 its product of digits (42), we obtain a palindrome (17171).
Adding to 17213 its reverse (31271), we get a palindrome (48484).
The spelling of 17213 in words is "seventeen thousand, two hundred thirteen".
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