423443340233 has 4 divisors (see below), whose sum is σ = 423603313920. Its totient is φ = 423283366548.

The previous prime is 423443340179. The next prime is 423443340247. The reversal of 423443340233 is 332043344324.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 423443340233 - 2¹² = 423443336137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 423443340193 and 423443340202.

It is not an unprimeable number, because it can be changed into a prime (423443340433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79982873 + ... + 79988166.

It is an arithmetic number, because the mean of its divisors is an integer number (105900828480).

Almost surely, 2^423443340233 is an apocalyptic number.

It is an amenable number.

423443340233 is a deficient number, since it is larger than the sum of its proper divisors (159973687).

423443340233 is a wasteful number, since it uses less digits than its factorization.

423443340233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159973686.

The product of its (nonzero) digits is 248832, while the sum is 35.

Adding to 423443340233 its reverse (332043344324), we get a palindrome (755486684557).

The spelling of 423443340233 in words is "four hundred twenty-three billion, four hundred forty-three million, three hundred forty thousand, two hundred thirty-three".