1317347 has 4 divisors (see below), whose sum is σ = 1394856. Its totient is φ = 1239840.

The previous prime is 1317319. The next prime is 1317359. The reversal of 1317347 is 7437131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7437131 = 13 ⋅572087.

It is a cyclic number.

It is not a de Polignac number, because 1317347 - 2⁸ = 1317091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1317307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38729 + ... + 38762.

It is an arithmetic number, because the mean of its divisors is an integer number (348714).

2^1317347 is an apocalyptic number.

1317347 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1317347 is a deficient number, since it is larger than the sum of its proper divisors (77509).

1317347 is an equidigital number, since it uses as much as digits as its factorization.

1317347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77508.

The product of its digits is 1764, while the sum is 26.

The square root of 1317347 is about 1147.7573785430. The cubic root of 1317347 is about 109.6225908908.

The spelling of 1317347 in words is "one million, three hundred seventeen thousand, three hundred forty-seven".