422105231 has 4 divisors (see below), whose sum is σ = 422208600. Its totient is φ = 422001864.

The previous prime is 422105219. The next prime is 422105239. The reversal of 422105231 is 132501224.

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 422105231 - 2¹⁸ = 421843087 is a prime.

It is a super-2 number, since 2×422105231² = 356345652075126722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422105239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45296 + ... + 53813.

It is an arithmetic number, because the mean of its divisors is an integer number (105552150).

Almost surely, 2^422105231 is an apocalyptic number.

422105231 is a deficient number, since it is larger than the sum of its proper divisors (103369).

422105231 is an equidigital number, since it uses as much as digits as its factorization.

422105231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103368.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 422105231 is about 20545.1997069875. The cubic root of 422105231 is about 750.1364083740.

Adding to 422105231 its reverse (132501224), we get a palindrome (554606455).

The spelling of 422105231 in words is "four hundred twenty-two million, one hundred five thousand, two hundred thirty-one".