1331317 has 4 divisors (see below), whose sum is σ = 1433740. Its totient is φ = 1228896.

The previous prime is 1331299. The next prime is 1331327. The reversal of 1331317 is 7131331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7131331 = 761 ⋅9371.

It can be written as a sum of positive squares in 2 ways, for example, as 910116 + 421201 = 954^2 + 649^2 .

It is a cyclic number.

It is not a de Polignac number, because 1331317 - 2¹¹ = 1329269 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1331294 and 1331303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331327) 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, 51192 + ... + 51217.

It is an arithmetic number, because the mean of its divisors is an integer number (358435).

2^1331317 is an apocalyptic number.

It is an amenable number.

1331317 is a deficient number, since it is larger than the sum of its proper divisors (102423).

1331317 is a wasteful number, since it uses less digits than its factorization.

1331317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102422.

The product of its digits is 189, while the sum is 19.

The square root of 1331317 is about 1153.8271100993. The cubic root of 1331317 is about 110.0087320892.

Adding to 1331317 its reverse (7131331), we get a palindrome (8462648).

The spelling of 1331317 in words is "one million, three hundred thirty-one thousand, three hundred seventeen".