403423 has 4 divisors (see below), whose sum is σ = 407680. Its totient is φ = 399168.

The previous prime is 403391. The next prime is 403433. The reversal of 403423 is 324304.

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 403423 - 2⁵ = 403391 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 403397 and 403406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1983 + ... + 2176.

It is an arithmetic number, because the mean of its divisors is an integer number (101920).

2⁴⁰³⁴²³ is an apocalyptic number.

403423 is a deficient number, since it is larger than the sum of its proper divisors (4257).

403423 is an equidigital number, since it uses as much as digits as its factorization.

403423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4256.

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 403423 is about 635.1558863775. The cubic root of 403423 is about 73.8902072825.

Adding to 403423 its reverse (324304), we get a palindrome (727727).

The spelling of 403423 in words is "four hundred three thousand, four hundred twenty-three", and thus it is an iban number.