423445343 has 4 divisors (see below), whose sum is σ = 445731960. Its totient is φ = 401158728.

The previous prime is 423445339. The next prime is 423445369. The reversal of 423445343 is 343544324.

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 423445343 - 2² = 423445339 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 (423445313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11143280 + ... + 11143317.

It is an arithmetic number, because the mean of its divisors is an integer number (111432990).

Almost surely, 2^423445343 is an apocalyptic number.

423445343 is a deficient number, since it is larger than the sum of its proper divisors (22286617).

423445343 is a wasteful number, since it uses less digits than its factorization.

423445343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22286616.

The product of its digits is 69120, while the sum is 32.

The square root of 423445343 is about 20577.7876118887. The cubic root of 423445343 is about 750.9294213884.

Adding to 423445343 its reverse (343544324), we get a palindrome (766989667).

The spelling of 423445343 in words is "four hundred twenty-three million, four hundred forty-five thousand, three hundred forty-three".