423318 has 16 divisors (see below), whose sum is σ = 967680. Its totient is φ = 120936.

The previous prime is 423307. The next prime is 423323. The reversal of 423318 is 813324.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 423294 and 423303.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4998 + ... + 5081.

It is an arithmetic number, because the mean of its divisors is an integer number (60480).

2⁴²³³¹⁸ is an apocalyptic number.

423318 is an abundant number, since it is smaller than the sum of its proper divisors (544362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423318 is a wasteful number, since it uses less digits than its factorization.

423318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10091.

The product of its digits is 576, while the sum is 21.

The square root of 423318 is about 650.6289265011. The cubic root of 423318 is about 75.0854138006.

It can be divided in two parts, 423 and 318, that added together give a triangular number (741 = T₃₈).

The spelling of 423318 in words is "four hundred twenty-three thousand, three hundred eighteen".