1308661317 has 6 divisors (see below), whose sum is σ = 1890288582. Its totient is φ = 872440872.

The previous prime is 1308661267. The next prime is 1308661339. The reversal of 1308661317 is 7131668031.

1308661317 is a `hidden beast` number, since 1 + 30 + 8 + 6 + 613 + 1 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1308558276 + 103041 = 36174^2 + 321^2 .

It is not a de Polignac number, because 1308661317 - 2¹² = 1308657221 is a prime.

It is a super-2 number, since 2×1308661317² = 3425188885224348978, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1308661517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72703398 + ... + 72703415.

It is an arithmetic number, because the mean of its divisors is an integer number (315048097).

Almost surely, 2^1308661317 is an apocalyptic number.

It is an amenable number.

1308661317 is a deficient number, since it is larger than the sum of its proper divisors (581627265).

1308661317 is a wasteful number, since it uses less digits than its factorization.

1308661317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145406819 (or 145406816 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 1308661317 is about 36175.4242131312. The cubic root of 1308661317 is about 1093.8113403987.

The spelling of 1308661317 in words is "one billion, three hundred eight million, six hundred sixty-one thousand, three hundred seventeen".