423404203 has 4 divisors (see below), whose sum is σ = 423568368. Its totient is φ = 423240040.

The previous prime is 423404173. The next prime is 423404257. The reversal of 423404203 is 302404324.

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 423404203 - 2¹⁷ = 423273131 is a prime.

It is a super-3 number, since 3×423404203³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423407203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78151 + ... + 83392.

It is an arithmetic number, because the mean of its divisors is an integer number (105892092).

Almost surely, 2^423404203 is an apocalyptic number.

423404203 is a deficient number, since it is larger than the sum of its proper divisors (164165).

423404203 is a wasteful number, since it uses less digits than its factorization.

423404203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164164.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 423404203 is about 20576.7879660553. The cubic root of 423404203 is about 750.9051016523.

Adding to 423404203 its reverse (302404324), we get a palindrome (725808527).

The spelling of 423404203 in words is "four hundred twenty-three million, four hundred four thousand, two hundred three".