1304334221 has 4 divisors (see below), whose sum is σ = 1316300700. Its totient is φ = 1292367744.

The previous prime is 1304334169. The next prime is 1304334257. The reversal of 1304334221 is 1224334031.

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 631969321 + 672364900 = 25139^2 + 25930^2 .

It is a cyclic number.

It is not a de Polignac number, because 1304334221 - 2¹⁴ = 1304317837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304331221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5983076 + ... + 5983293.

It is an arithmetic number, because the mean of its divisors is an integer number (329075175).

Almost surely, 2^1304334221 is an apocalyptic number.

It is an amenable number.

1304334221 is a deficient number, since it is larger than the sum of its proper divisors (11966479).

1304334221 is a wasteful number, since it uses less digits than its factorization.

1304334221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11966478.

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

The square root of 1304334221 is about 36115.5675713396. The cubic root of 1304334221 is about 1092.6044447690.

Adding to 1304334221 its reverse (1224334031), we get a palindrome (2528668252).

The spelling of 1304334221 in words is "one billion, three hundred four million, three hundred thirty-four thousand, two hundred twenty-one".