422345431 has 4 divisors (see below), whose sum is σ = 431331552. Its totient is φ = 413359312.

The previous prime is 422345411. The next prime is 422345437. The reversal of 422345431 is 134543224.

It is a happy number.

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 422345431 - 2⁷ = 422345303 is a prime.

It is a super-2 number, since 2×422345431² = 356751326173151522, 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 422345431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422345437) 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, 4492990 + ... + 4493083.

It is an arithmetic number, because the mean of its divisors is an integer number (107832888).

Almost surely, 2^422345431 is an apocalyptic number.

422345431 is a deficient number, since it is larger than the sum of its proper divisors (8986121).

422345431 is an equidigital number, since it uses as much as digits as its factorization.

422345431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8986120.

The product of its digits is 11520, while the sum is 28.

The square root of 422345431 is about 20551.0445233326. The cubic root of 422345431 is about 750.2786703702.

Adding to 422345431 its reverse (134543224), we get a palindrome (556888655).

The spelling of 422345431 in words is "four hundred twenty-two million, three hundred forty-five thousand, four hundred thirty-one".