1317331 has 4 divisors (see below), whose sum is σ = 1322464. Its totient is φ = 1312200.

The previous prime is 1317319. The next prime is 1317359. The reversal of 1317331 is 1337131.

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: 1337131 = 229 ⋅5839.

It is a 3-Lehmer number, since φ(1317331) divides (1317331-1)³.

It is a cyclic number.

It is not a de Polignac number, because 1317331 - 2⁵ = 1317299 is a prime.

It is a super-2 number, since 2×1317331² = 3470721927122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1317299 and 1317308.

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 3 ways as a sum of consecutive naturals, for example, 2160 + ... + 2701.

It is an arithmetic number, because the mean of its divisors is an integer number (330616).

2^1317331 is an apocalyptic number.

1317331 is a deficient number, since it is larger than the sum of its proper divisors (5133).

1317331 is an equidigital number, since it uses as much as digits as its factorization.

1317331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5132.

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

The square root of 1317331 is about 1147.7504084077. The cubic root of 1317331 is about 109.6221470775.

The spelling of 1317331 in words is "one million, three hundred seventeen thousand, three hundred thirty-one".