422545231 has 4 divisors (see below), whose sum is σ = 429472264. Its totient is φ = 415618200.

The previous prime is 422545229. The next prime is 422545241. The reversal of 422545231 is 132545224.

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 422545231 - 2¹ = 422545229 is a prime.

It is a super-2 number, since 2×422545231² = 357088944481686722, which contains 22 as substring.

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 422545231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422545241) 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, 3463425 + ... + 3463546.

It is an arithmetic number, because the mean of its divisors is an integer number (107368066).

Almost surely, 2^422545231 is an apocalyptic number.

422545231 is a deficient number, since it is larger than the sum of its proper divisors (6927033).

422545231 is an equidigital number, since it uses as much as digits as its factorization.

422545231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6927032.

The product of its digits is 9600, while the sum is 28.

The square root of 422545231 is about 20555.9050153478. The cubic root of 422545231 is about 750.3969637819.

The spelling of 422545231 in words is "four hundred twenty-two million, five hundred forty-five thousand, two hundred thirty-one".