4221304313 has 4 divisors (see below), whose sum is σ = 4222056180. Its totient is φ = 4220552448.

The previous prime is 4221304277. The next prime is 4221304327. The reversal of 4221304313 is 3134031224.

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

It can be written as a sum of positive squares in 2 ways, for example, as 573506704 + 3647797609 = 23948^2 + 60397^2 .

It is a cyclic number.

It is not a de Polignac number, because 4221304313 - 2¹² = 4221300217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4221304513) 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, 367448 + ... + 378761.

It is an arithmetic number, because the mean of its divisors is an integer number (1055514045).

Almost surely, 2^4221304313 is an apocalyptic number.

It is an amenable number.

4221304313 is a deficient number, since it is larger than the sum of its proper divisors (751867).

4221304313 is an equidigital number, since it uses as much as digits as its factorization.

4221304313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751866.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 4221304313 is about 64971.5654190354. The cubic root of 4221304313 is about 1616.1520613913.

Adding to 4221304313 its reverse (3134031224), we get a palindrome (7355335537).

The spelling of 4221304313 in words is "four billion, two hundred twenty-one million, three hundred four thousand, three hundred thirteen".