505323 has 24 divisors (see below), whose sum is σ = 899808. Its totient is φ = 266112.

The previous prime is 505321. The next prime is 505327. The reversal of 505323 is 323505.

Added to its reverse (323505) it gives a triangular number (828828 = T₁₂₈₇).

It is not a de Polignac number, because 505323 - 2¹ = 505321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 505296 and 505305.

It is not an unprimeable number, because it can be changed into a prime (505321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 511 + ... + 1127.

It is an arithmetic number, because the mean of its divisors is an integer number (37492).

2⁵⁰⁵³²³ is an apocalyptic number.

505323 is a deficient number, since it is larger than the sum of its proper divisors (394485).

505323 is a wasteful number, since it uses less digits than its factorization.

505323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643 (or 640 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 18.

The square root of 505323 is about 710.8607458567. The cubic root of 505323 is about 79.6507168185.

Adding to 505323 its reverse (323505), we get a palindrome (828828).

It can be divided in two parts, 505 and 323, that added together give a palindrome (828).

The spelling of 505323 in words is "five hundred five thousand, three hundred twenty-three".