173023 has 2 divisors, whose sum is σ = 173024.
Its totient is φ = 173022.
The previous prime is 173021. The next prime is 173039. The reversal of 173023 is 320371.
Adding to 173023 its reverse (320371), we get a palindrome (493394).
It is an a-pointer prime, because the next prime (173039) can be obtained adding 173023 to its sum of digits (16).
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 173023 - 21 = 173021 is a prime.
Together with 173021, it forms a pair of twin primes.
It is a junction number, because it is equal to n+sod(n) for n = 172988 and 173006.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (173021) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86511 + 86512.
It is an arithmetic number, because the mean of its divisors is an integer number (86512).
2173023 is an apocalyptic number.
173023 is a deficient number, since it is larger than the sum of its proper divisors (1).
173023 is an equidigital number, since it uses as much as digits as its factorization.
173023 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 126, while the sum is 16.
The square root of 173023 is about 415.9603346474.
The cubic root of 173023 is about 55.7230157573.
The spelling of 173023 in words is "one hundred seventy-three thousand, twenty-three", and thus it is an iban number.