423533503 has 6 divisors (see below), whose sum is σ = 446998344. Its totient is φ = 401241924.

The previous prime is 423533489. The next prime is 423533507. The reversal of 423533503 is 305335324.

It is not a de Polignac number, because 423533503 - 2¹⁷ = 423402431 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 (423533507) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 586251 + ... + 586972.

It is an arithmetic number, because the mean of its divisors is an integer number (74499724).

Almost surely, 2^423533503 is an apocalyptic number.

423533503 is a deficient number, since it is larger than the sum of its proper divisors (23464841).

423533503 is a wasteful number, since it uses less digits than its factorization.

423533503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1173261 (or 1173242 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 28.

The square root of 423533503 is about 20579.9296160118. The cubic root of 423533503 is about 750.9815314935.

Adding to 423533503 its reverse (305335324), we get a palindrome (728868827).

The spelling of 423533503 in words is "four hundred twenty-three million, five hundred thirty-three thousand, five hundred three".