171223 has 4 divisors (see below), whose sum is σ = 184408. Its totient is φ = 158040.

The previous prime is 171203. The next prime is 171233. The reversal of 171223 is 322171.

It is a happy number.

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 171223 - 2⁹ = 170711 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 171197 and 171206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6573 + ... + 6598.

It is an arithmetic number, because the mean of its divisors is an integer number (46102).

2¹⁷¹²²³ is an apocalyptic number.

171223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

171223 is a deficient number, since it is larger than the sum of its proper divisors (13185).

171223 is a wasteful number, since it uses less digits than its factorization.

171223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13184.

The product of its digits is 84, while the sum is 16.

The square root of 171223 is about 413.7910100522. The cubic root of 171223 is about 55.5291084489.

Adding to 171223 its reverse (322171), we get a palindrome (493394).

The spelling of 171223 in words is "one hundred seventy-one thousand, two hundred twenty-three", and thus it is an iban number.