4313221 has 4 divisors (see below), whose sum is σ = 4705344.
Its totient is φ = 3921100.
The previous prime is 4313219. The next prime is 4313251. The reversal of 4313221 is 1223134.
Adding to 4313221 its reverse (1223134), we get a palindrome (5536355).
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 4313221 - 21 = 4313219 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 4313195 and 4313204.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (4313251) 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, 196045 + ... + 196066.
It is an arithmetic number, because the mean of its divisors is an integer number (1176336).
Almost surely, 24313221 is an apocalyptic number.
It is an amenable number.
4313221 is a deficient number, since it is larger than the sum of its proper divisors (392123).
4313221 is a wasteful number, since it uses less digits than its factorization.
4313221 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 392122.
The product of its digits is 144, while the sum is 16.
The square root of 4313221 is about 2076.8295548744.
The cubic root of 4313221 is about 162.7798224102.
The spelling of 4313221 in words is "four million, three hundred thirteen thousand, two hundred twenty-one".