423331 has 4 divisors (see below), whose sum is σ = 425952. Its totient is φ = 420712.

The previous prime is 423323. The next prime is 423341. The reversal of 423331 is 133324.

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 423331 - 2³ = 423323 is a prime.

It is a super-2 number, since 2×423331² = 358418271122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423341) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1051 + ... + 1396.

It is an arithmetic number, because the mean of its divisors is an integer number (106488).

2⁴²³³³¹ is an apocalyptic number.

423331 is the 412-nd centered pentagonal number.

423331 is a deficient number, since it is larger than the sum of its proper divisors (2621).

423331 is a wasteful number, since it uses less digits than its factorization.

423331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2620.

The product of its digits is 216, while the sum is 16.

The square root of 423331 is about 650.6389167580. The cubic root of 423331 is about 75.0861824114.

Adding to 423331 its reverse (133324), we get a palindrome (556655).

The spelling of 423331 in words is "four hundred twenty-three thousand, three hundred thirty-one".