1288223317 has 2 divisors, whose sum is σ = 1288223318. Its totient is φ = 1288223316.

The previous prime is 1288223303. The next prime is 1288223323. The reversal of 1288223317 is 7133228821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1208674756 + 79548561 = 34766^2 + 8919^2 .

It is a cyclic number.

It is not a de Polignac number, because 1288223317 - 2¹¹ = 1288221269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1288223017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 644111658 + 644111659.

It is an arithmetic number, because the mean of its divisors is an integer number (644111659).

Almost surely, 2^1288223317 is an apocalyptic number.

It is an amenable number.

1288223317 is a deficient number, since it is larger than the sum of its proper divisors (1).

1288223317 is an equidigital number, since it uses as much as digits as its factorization.

1288223317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 37.

The square root of 1288223317 is about 35891.8279974704. The cubic root of 1288223317 is about 1088.0872430063.

The spelling of 1288223317 in words is "one billion, two hundred eighty-eight million, two hundred twenty-three thousand, three hundred seventeen".