1304031217 has 2 divisors, whose sum is σ = 1304031218. Its totient is φ = 1304031216.

The previous prime is 1304031181. The next prime is 1304031233. The reversal of 1304031217 is 7121304031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1304004321 + 26896 = 36111^2 + 164^2 .

It is a cyclic number.

It is not a de Polignac number, because 1304031217 - 2¹¹ = 1304029169 is a prime.

It is not a weakly prime, because it can be changed into another prime (1304031517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652015608 + 652015609.

It is an arithmetic number, because the mean of its divisors is an integer number (652015609).

Almost surely, 2^1304031217 is an apocalyptic number.

It is an amenable number.

1304031217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1304031217 is an equidigital number, since it uses as much as digits as its factorization.

1304031217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 1304031217 is about 36111.3724053794. The cubic root of 1304031217 is about 1092.5198322132.

Adding to 1304031217 its reverse (7121304031), we get a palindrome (8425335248).

The spelling of 1304031217 in words is "one billion, three hundred four million, thirty-one thousand, two hundred seventeen".