163423 has 6 divisors (see below), whose sum is σ = 177144. Its totient is φ = 150696.

The previous prime is 163417. The next prime is 163433. The reversal of 163423 is 324361.

163423 is nontrivially palindromic in base 12.

It is not a de Polignac number, because 163423 - 2¹³ = 155231 is a prime.

It is a Duffinian number.

163423 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 163423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163403) 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 5 ways as a sum of consecutive naturals, for example, 315 + ... + 652.

It is an arithmetic number, because the mean of its divisors is an integer number (29524).

2¹⁶³⁴²³ is an apocalyptic number.

163423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

163423 is a deficient number, since it is larger than the sum of its proper divisors (13721).

163423 is an equidigital number, since it uses as much as digits as its factorization.

163423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993 (or 980 counting only the distinct ones).

The product of its digits is 432, while the sum is 19.

The square root of 163423 is about 404.2561069421. The cubic root of 163423 is about 54.6727676779.

Adding to 163423 its reverse (324361), we get a palindrome (487784).

The spelling of 163423 in words is "one hundred sixty-three thousand, four hundred twenty-three".