4322431221 has 4 divisors (see below), whose sum is σ = 5763241632. Its totient is φ = 2881620812.

The previous prime is 4322431207. The next prime is 4322431247. The reversal of 4322431221 is 1221342234.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4322431221 - 2⁹ = 4322430709 is a prime.

It is a super-3 number, since 3×4322431221³ (a number of 30 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4322431191 and 4322431200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4322431261) 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, 720405201 + ... + 720405206.

It is an arithmetic number, because the mean of its divisors is an integer number (1440810408).

Almost surely, 2^4322431221 is an apocalyptic number.

It is an amenable number.

4322431221 is a deficient number, since it is larger than the sum of its proper divisors (1440810411).

4322431221 is a wasteful number, since it uses less digits than its factorization.

4322431221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1440810410.

The product of its digits is 2304, while the sum is 24.

The square root of 4322431221 is about 65745.1992239738. The cubic root of 4322431221 is about 1628.9560380819.

Adding to 4322431221 its reverse (1221342234), we get a palindrome (5543773455).

The spelling of 4322431221 in words is "four billion, three hundred twenty-two million, four hundred thirty-one thousand, two hundred twenty-one".