422431 has 2 divisors, whose sum is σ = 422432. Its totient is φ = 422430.

The previous prime is 422407. The next prime is 422453. The reversal of 422431 is 134224.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 422431 - 2¹¹ = 420383 is a prime.

It is a super-2 number, since 2×422431² = 356895899522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (422231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211215 + 211216.

It is an arithmetic number, because the mean of its divisors is an integer number (211216).

2⁴²²⁴³¹ is an apocalyptic number.

422431 is a deficient number, since it is larger than the sum of its proper divisors (1).

422431 is an equidigital number, since it uses as much as digits as its factorization.

422431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 192, while the sum is 16.

The square root of 422431 is about 649.9469209097. The cubic root of 422431 is about 75.0329336843.

Adding to 422431 its reverse (134224), we get a palindrome (556655).

The spelling of 422431 in words is "four hundred twenty-two thousand, four hundred thirty-one".