13604321317 has 2 divisors, whose sum is σ = 13604321318. Its totient is φ = 13604321316.

The previous prime is 13604321299. The next prime is 13604321323. The reversal of 13604321317 is 71312340631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11896483041 + 1707838276 = 109071^2 + 41326^2 .

It is a cyclic number.

It is not a de Polignac number, because 13604321317 - 2¹¹ = 13604319269 is a prime.

It is a super-2 number, since 2×13604321317² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13604321117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6802160658 + 6802160659.

It is an arithmetic number, because the mean of its divisors is an integer number (6802160659).

Almost surely, 2^13604321317 is an apocalyptic number.

It is an amenable number.

13604321317 is a deficient number, since it is larger than the sum of its proper divisors (1).

13604321317 is an equidigital number, since it uses as much as digits as its factorization.

13604321317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 31.

Adding to 13604321317 its reverse (71312340631), we get a palindrome (84916661948).

The spelling of 13604321317 in words is "thirteen billion, six hundred four million, three hundred twenty-one thousand, three hundred seventeen".