1311423221417 has 2 divisors, whose sum is σ = 1311423221418. Its totient is φ = 1311423221416.

The previous prime is 1311423221377. The next prime is 1311423221501. The reversal of 1311423221417 is 7141223241131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 830320065961 + 481103155456 = 911219^2 + 693616^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311423221417 is a prime.

It is not a weakly prime, because it can be changed into another prime (1311423121417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655711610708 + 655711610709.

It is an arithmetic number, because the mean of its divisors is an integer number (655711610709).

Almost surely, 2^{1311423221417} is an apocalyptic number.

It is an amenable number.

1311423221417 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311423221417 is an equidigital number, since it uses as much as digits as its factorization.

1311423221417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 32.

Adding to 1311423221417 its reverse (7141223241131), we get a palindrome (8452646462548).

The spelling of 1311423221417 in words is "one trillion, three hundred eleven billion, four hundred twenty-three million, two hundred twenty-one thousand, four hundred seventeen".