422235431 has 4 divisors (see below), whose sum is σ = 428019552. Its totient is φ = 416451312.

The previous prime is 422235421. The next prime is 422235493. The reversal of 422235431 is 134532224.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-422235431 is a prime.

It is a super-2 number, since 2×422235431² = 356565518383511522, 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 422235431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422235421) 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, 2891951 + ... + 2892096.

It is an arithmetic number, because the mean of its divisors is an integer number (107004888).

Almost surely, 2^422235431 is an apocalyptic number.

422235431 is a deficient number, since it is larger than the sum of its proper divisors (5784121).

422235431 is an equidigital number, since it uses as much as digits as its factorization.

422235431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5784120.

The product of its digits is 5760, while the sum is 26.

The square root of 422235431 is about 20548.3680860549. The cubic root of 422235431 is about 750.2135279427.

Adding to 422235431 its reverse (134532224), we get a palindrome (556767655).

The spelling of 422235431 in words is "four hundred twenty-two million, two hundred thirty-five thousand, four hundred thirty-one".