422235631 has 2 divisors, whose sum is σ = 422235632. Its totient is φ = 422235630.

The previous prime is 422235617. The next prime is 422235673. The reversal of 422235631 is 136532224.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 422235631 - 2¹¹ = 422233583 is a prime.

It is a super-2 number, since 2×422235631² = 356565856171936322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 422235631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (422235031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211117815 + 211117816.

It is an arithmetic number, because the mean of its divisors is an integer number (211117816).

Almost surely, 2^422235631 is an apocalyptic number.

422235631 is a deficient number, since it is larger than the sum of its proper divisors (1).

422235631 is an equidigital number, since it uses as much as digits as its factorization.

422235631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 28.

The square root of 422235631 is about 20548.3729526208. The cubic root of 422235631 is about 750.2136463938.

Adding to 422235631 its reverse (136532224), we get a palindrome (558767855).

The spelling of 422235631 in words is "four hundred twenty-two million, two hundred thirty-five thousand, six hundred thirty-one".