423443343 has 4 divisors (see below), whose sum is σ = 564591128. Its totient is φ = 282295560.

The previous prime is 423443333. The next prime is 423443357. The reversal of 423443343 is 343344324.

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

It is a de Polignac number, because none of the positive numbers 2^k-423443343 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 423443343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423443323) 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, 70573888 + ... + 70573893.

It is an arithmetic number, because the mean of its divisors is an integer number (141147782).

Almost surely, 2^423443343 is an apocalyptic number.

423443343 is a deficient number, since it is larger than the sum of its proper divisors (141147785).

423443343 is a wasteful number, since it uses less digits than its factorization.

423443343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141147784.

The product of its digits is 41472, while the sum is 30.

The square root of 423443343 is about 20577.7390157422. The cubic root of 423443343 is about 750.9282391333.

Adding to 423443343 its reverse (343344324), we get a palindrome (766787667).

The spelling of 423443343 in words is "four hundred twenty-three million, four hundred forty-three thousand, three hundred forty-three".