403423023 has 4 divisors (see below), whose sum is σ = 537897368. Its totient is φ = 268948680.

The previous prime is 403423003. The next prime is 403423049. The reversal of 403423023 is 320324304.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 403423023 - 2⁶ = 403422959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403423003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67237168 + ... + 67237173.

It is an arithmetic number, because the mean of its divisors is an integer number (134474342).

Almost surely, 2^403423023 is an apocalyptic number.

403423023 is a deficient number, since it is larger than the sum of its proper divisors (134474345).

403423023 is a wasteful number, since it uses less digits than its factorization.

403423023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134474344.

The product of its (nonzero) digits is 1728, while the sum is 21.

The square root of 403423023 is about 20085.3932747158. The cubic root of 403423023 is about 738.9020868676.

Adding to 403423023 its reverse (320324304), we get a palindrome (723747327).

It can be divided in two parts, 40342 and 3023, that added together give a triangular number (43365 = T₂₉₄).

The spelling of 403423023 in words is "four hundred three million, four hundred twenty-three thousand, twenty-three".