403243423 has 4 divisors (see below), whose sum is σ = 439901928. Its totient is φ = 366584920.

The previous prime is 403243387. The next prime is 403243433. The reversal of 403243423 is 324342304.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-403243423 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 (403243433) 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, 18329236 + ... + 18329257.

It is an arithmetic number, because the mean of its divisors is an integer number (109975482).

Almost surely, 2^403243423 is an apocalyptic number.

403243423 is a deficient number, since it is larger than the sum of its proper divisors (36658505).

403243423 is a wasteful number, since it uses less digits than its factorization.

403243423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36658504.

The product of its (nonzero) digits is 6912, while the sum is 25.

The square root of 403243423 is about 20080.9218662889. The cubic root of 403243423 is about 738.7924199213.

Adding to 403243423 its reverse (324342304), we get a palindrome (727585727).

The spelling of 403243423 in words is "four hundred three million, two hundred forty-three thousand, four hundred twenty-three".