422531443 has 4 divisors (see below), whose sum is σ = 444769960. Its totient is φ = 400292928.

The previous prime is 422531401. The next prime is 422531449. The reversal of 422531443 is 344135224.

It is a happy number.

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 422531443 - 2⁹ = 422530931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (422531449) 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, 11119230 + ... + 11119267.

It is an arithmetic number, because the mean of its divisors is an integer number (111192490).

Almost surely, 2^422531443 is an apocalyptic number.

422531443 is a deficient number, since it is larger than the sum of its proper divisors (22238517).

422531443 is a wasteful number, since it uses less digits than its factorization.

422531443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22238516.

The product of its digits is 11520, while the sum is 28.

The square root of 422531443 is about 20555.5696345297. The cubic root of 422531443 is about 750.3888016688.

Adding to 422531443 its reverse (344135224), we get a palindrome (766666667).

The spelling of 422531443 in words is "four hundred twenty-two million, five hundred thirty-one thousand, four hundred forty-three".