217330 has 16 divisors (see below), whose sum is σ = 396864. Its totient is φ = 85680.

The previous prime is 217319. The next prime is 217333. The reversal of 217330 is 33712.

217330 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (217333) by changing a digit.

217330 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 925 + ... + 1135.

It is an arithmetic number, because the mean of its divisors is an integer number (24804).

2²¹⁷³³⁰ is an apocalyptic number.

217330 is a deficient number, since it is larger than the sum of its proper divisors (179534).

217330 is a wasteful number, since it uses less digits than its factorization.

217330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321.

The product of its (nonzero) digits is 126, while the sum is 16.

The square root of 217330 is about 466.1866578957. The cubic root of 217330 is about 60.1228962515.

The spelling of 217330 in words is "two hundred seventeen thousand, three hundred thirty".