208423 has 4 divisors (see below), whose sum is σ = 215640. Its totient is φ = 201208.

The previous prime is 208409. The next prime is 208433. The reversal of 208423 is 324802.

It is a happy number.

208423 is nontrivially palindromic in base 13 and base 14.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 208423 - 2⁵ = 208391 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 208423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3565 + ... + 3622.

It is an arithmetic number, because the mean of its divisors is an integer number (53910).

2²⁰⁸⁴²³ is an apocalyptic number.

208423 is a deficient number, since it is larger than the sum of its proper divisors (7217).

208423 is an equidigital number, since it uses as much as digits as its factorization.

208423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7216.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 208423 is about 456.5336789329. The cubic root of 208423 is about 59.2900587821.

It can be divided in two parts, 20842 and 3, that multiplied together give a palindrome (62526).

The spelling of 208423 in words is "two hundred eight thousand, four hundred twenty-three".