1304434443217 has 2 divisors, whose sum is σ = 1304434443218. Its totient is φ = 1304434443216.

The previous prime is 1304434443199. The next prime is 1304434443269. The reversal of 1304434443217 is 7123444344031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1113396390976 + 191038052241 = 1055176^2 + 437079^2 .

It is an emirp because it is prime and its reverse (7123444344031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1304434443217 - 2¹⁹ = 1304433918929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1304434443217.

It is not a weakly prime, because it can be changed into another prime (1304434443317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652217221608 + 652217221609.

It is an arithmetic number, because the mean of its divisors is an integer number (652217221609).

Almost surely, 2^{1304434443217} is an apocalyptic number.

It is an amenable number.

1304434443217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1304434443217 is an equidigital number, since it uses as much as digits as its factorization.

1304434443217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 387072, while the sum is 40.

Adding to 1304434443217 its reverse (7123444344031), we get a palindrome (8427878787248).

The spelling of 1304434443217 in words is "one trillion, three hundred four billion, four hundred thirty-four million, four hundred forty-three thousand, two hundred seventeen".