1306568317 has 2 divisors, whose sum is σ = 1306568318. Its totient is φ = 1306568316.

The previous prime is 1306568299. The next prime is 1306568323. The reversal of 1306568317 is 7138656031.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1010349796 + 296218521 = 31786^2 + 17211^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1306568317 is a prime.

It is a super-3 number, since 3×1306568317³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1306568317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1306568387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 653284158 + 653284159.

It is an arithmetic number, because the mean of its divisors is an integer number (653284159).

Almost surely, 2^1306568317 is an apocalyptic number.

It is an amenable number.

1306568317 is a deficient number, since it is larger than the sum of its proper divisors (1).

1306568317 is an equidigital number, since it uses as much as digits as its factorization.

1306568317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 1306568317 is about 36146.4841582138. The cubic root of 1306568317 is about 1093.2279022761.

The spelling of 1306568317 in words is "one billion, three hundred six million, five hundred sixty-eight thousand, three hundred seventeen".