173823 has 8 divisors (see below), whose sum is σ = 249648. Its totient is φ = 106944.

The previous prime is 173819. The next prime is 173827. The reversal of 173823 is 328371.

It is an interprime number because it is at equal distance from previous prime (173819) and next prime (173827).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 173823 - 2² = 173819 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 173793 and 173802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (173827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2190 + ... + 2267.

It is an arithmetic number, because the mean of its divisors is an integer number (31206).

2¹⁷³⁸²³ is an apocalyptic number.

173823 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

173823 is a deficient number, since it is larger than the sum of its proper divisors (75825).

173823 is a wasteful number, since it uses less digits than its factorization.

173823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4473.

The product of its digits is 1008, while the sum is 24.

The square root of 173823 is about 416.9208557988. The cubic root of 173823 is about 55.8087652114.

The spelling of 173823 in words is "one hundred seventy-three thousand, eight hundred twenty-three".