1224311317 has 2 divisors, whose sum is σ = 1224311318. Its totient is φ = 1224311316.

The previous prime is 1224311281. The next prime is 1224311339. The reversal of 1224311317 is 7131134221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1186044721 + 38266596 = 34439^2 + 6186^2 .

It is an emirp because it is prime and its reverse (7131134221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1224311317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1224311291 and 1224311300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1224311617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612155658 + 612155659.

It is an arithmetic number, because the mean of its divisors is an integer number (612155659).

Almost surely, 2^1224311317 is an apocalyptic number.

It is an amenable number.

1224311317 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224311317 is an equidigital number, since it uses as much as digits as its factorization.

1224311317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 25.

The square root of 1224311317 is about 34990.1602882868. The cubic root of 1224311317 is about 1069.7869308180.

Adding to 1224311317 its reverse (7131134221), we get a palindrome (8355445538).

The spelling of 1224311317 in words is "one billion, two hundred twenty-four million, three hundred eleven thousand, three hundred seventeen".