171611423 has 6 divisors (see below), whose sum is σ = 173337672. Its totient is φ = 169902200.

The previous prime is 171611369. The next prime is 171611449. The reversal of 171611423 is 324116171.

It is not a de Polignac number, because 171611423 - 2⁶ = 171611359 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 171611392 and 171611401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171611023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1790 + ... + 18612.

It is an arithmetic number, because the mean of its divisors is an integer number (28889612).

Almost surely, 2^171611423 is an apocalyptic number.

171611423 is a deficient number, since it is larger than the sum of its proper divisors (1726249).

171611423 is an equidigital number, since it uses as much as digits as its factorization.

171611423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17025 (or 16924 counting only the distinct ones).

The product of its digits is 1008, while the sum is 26.

The square root of 171611423 is about 13100.0543128645. The cubic root of 171611423 is about 555.7106639009.

Adding to 171611423 its reverse (324116171), we get a palindrome (495727594).

The spelling of 171611423 in words is "one hundred seventy-one million, six hundred eleven thousand, four hundred twenty-three".