171423 has 16 divisors (see below), whose sum is σ = 290560. Its totient is φ = 97848.

The previous prime is 171403. The next prime is 171427. The reversal of 171423 is 324171.

It is not a de Polignac number, because 171423 - 2⁸ = 171167 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 171396 and 171405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265 + ... + 642.

It is an arithmetic number, because the mean of its divisors is an integer number (18160).

2¹⁷¹⁴²³ is an apocalyptic number.

171423 is a deficient number, since it is larger than the sum of its proper divisors (119137).

171423 is an equidigital number, since it uses as much as digits as its factorization.

171423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923 (or 917 counting only the distinct ones).

The product of its digits is 168, while the sum is 18.

The square root of 171423 is about 414.0326074115. The cubic root of 171423 is about 55.5507206163.

Subtracting from 171423 its sum of digits (18), we obtain a triangular number (171405 = T₅₈₅).

Adding to 171423 its reverse (324171), we get a palindrome (495594).

The spelling of 171423 in words is "one hundred seventy-one thousand, four hundred twenty-three", and thus it is an iban number.