1317305 has 16 divisors (see below), whose sum is σ = 1767744. Its totient is φ = 934080.

The previous prime is 1317301. The next prime is 1317307. The reversal of 1317305 is 5037131.

It is a happy number.

It is not a de Polignac number, because 1317305 - 2² = 1317301 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1317301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2087 + ... + 2643.

It is an arithmetic number, because the mean of its divisors is an integer number (110484).

2^1317305 is an apocalyptic number.

It is an amenable number.

1317305 is a deficient number, since it is larger than the sum of its proper divisors (450439).

1317305 is a wasteful number, since it uses less digits than its factorization.

1317305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616.

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

The square root of 1317305 is about 1147.7390818474. The cubic root of 1317305 is about 109.6214258731.

The spelling of 1317305 in words is "one million, three hundred seventeen thousand, three hundred five".