171023 has 2 divisors, whose sum is σ = 171024. Its totient is φ = 171022.

The previous prime is 171007. The next prime is 171029. The reversal of 171023 is 320171.

171023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 171023 - 2⁴ = 171007 is a prime.

It is a Sophie Germain prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 170989 and 171007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85511 + 85512.

It is an arithmetic number, because the mean of its divisors is an integer number (85512).

2¹⁷¹⁰²³ is an apocalyptic number.

171023 is a deficient number, since it is larger than the sum of its proper divisors (1).

171023 is an equidigital number, since it uses as much as digits as its factorization.

171023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 171023 is about 413.5492715506. The cubic root of 171023 is about 55.5074794454.

Adding to 171023 its reverse (320171), we get a palindrome (491194).

It can be divided in two parts, 17 and 1023, that multiplied together give a triangular number (17391 = T₁₈₆).

The spelling of 171023 in words is "one hundred seventy-one thousand, twenty-three", and thus it is an iban number.