503823 has 8 divisors (see below), whose sum is σ = 707200. Its totient is φ = 318168.

The previous prime is 503821. The next prime is 503827. The reversal of 503823 is 328305.

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

It is not a de Polignac number, because 503823 - 2¹ = 503821 is a prime.

It is a Duffinian number.

503823 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 503823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4363 + ... + 4476.

It is an arithmetic number, because the mean of its divisors is an integer number (88400).

2⁵⁰³⁸²³ is an apocalyptic number.

503823 is a deficient number, since it is larger than the sum of its proper divisors (203377).

503823 is a wasteful number, since it uses less digits than its factorization.

503823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8861.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 503823 is about 709.8049027726. The cubic root of 503823 is about 79.5718270205.

It can be divided in two parts, 503 and 823, that added together give a triangular number (1326 = T₅₁).

The spelling of 503823 in words is "five hundred three thousand, eight hundred twenty-three".