1305317 has 16 divisors (see below), whose sum is σ = 1505280. Its totient is φ = 1123200.

The previous prime is 1305307. The next prime is 1305371. The reversal of 1305317 is 7135031.

It is a happy number.

It is not a de Polignac number, because 1305317 - 2⁴ = 1305301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1305307) 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 in 15 ways as a sum of consecutive naturals, for example, 16484 + ... + 16562.

It is an arithmetic number, because the mean of its divisors is an integer number (94080).

2^1305317 is an apocalyptic number.

It is an amenable number.

1305317 is a deficient number, since it is larger than the sum of its proper divisors (199963).

1305317 is a wasteful number, since it uses less digits than its factorization.

1305317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164.

The product of its (nonzero) digits is 315, while the sum is 20.

The square root of 1305317 is about 1142.5047045855. The cubic root of 1305317 is about 109.2878791407.

The spelling of 1305317 in words is "one million, three hundred five thousand, three hundred seventeen".