423213 has 12 divisors (see below), whose sum is σ = 656640. Its totient is φ = 241752.

The previous prime is 423209. The next prime is 423221. The reversal of 423213 is 312324.

It is not a de Polignac number, because 423213 - 2² = 423209 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 423192 and 423201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423233) 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 11 ways as a sum of consecutive naturals, for example, 1293 + ... + 1586.

It is an arithmetic number, because the mean of its divisors is an integer number (54720).

2⁴²³²¹³ is an apocalyptic number.

It is an amenable number.

423213 is a deficient number, since it is larger than the sum of its proper divisors (233427).

423213 is a wasteful number, since it uses less digits than its factorization.

423213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2896 (or 2889 counting only the distinct ones).

The product of its digits is 144, while the sum is 15.

The square root of 423213 is about 650.5482303411. The cubic root of 423213 is about 75.0792052132.

Adding to 423213 its reverse (312324), we get a palindrome (735537).

Subtracting from 423213 its reverse (312324), we obtain a square (110889 = 333²).

It can be divided in two parts, 42321 and 3, that added together give a palindrome (42324).

The spelling of 423213 in words is "four hundred twenty-three thousand, two hundred thirteen".