1317109 has 4 divisors (see below), whose sum is σ = 1394604. Its totient is φ = 1239616.

The previous prime is 1317091. The next prime is 1317119. The reversal of 1317109 is 9017131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9017131 = 1019 ⋅8849.

It can be written as a sum of positive squares in 2 ways, for example, as 1096209 + 220900 = 1047^2 + 470^2 .

It is a cyclic number.

It is not a de Polignac number, because 1317109 - 2¹³ = 1308917 is a prime.

It is a super-2 number, since 2×1317109² = 3469552235762, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1317109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317119) 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, 38722 + ... + 38755.

It is an arithmetic number, because the mean of its divisors is an integer number (348651).

2^1317109 is an apocalyptic number.

It is an amenable number.

1317109 is a deficient number, since it is larger than the sum of its proper divisors (77495).

1317109 is an equidigital number, since it uses as much as digits as its factorization.

1317109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77494.

The product of its (nonzero) digits is 189, while the sum is 22.

The square root of 1317109 is about 1147.6536934110. The cubic root of 1317109 is about 109.6159887964.

Adding to 1317109 its sum of digits (22), we get a palindrome (1317131).

The spelling of 1317109 in words is "one million, three hundred seventeen thousand, one hundred nine".