1318271 has 4 divisors (see below), whose sum is σ = 1339944. Its totient is φ = 1296600.

The previous prime is 1318267. The next prime is 1318279. The reversal of 1318271 is 1728131.

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: 1728131 = 67 ⋅25793.

It is a cyclic number.

It is not a de Polignac number, because 1318271 - 2² = 1318267 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1318279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10745 + ... + 10866.

It is an arithmetic number, because the mean of its divisors is an integer number (334986).

2^1318271 is an apocalyptic number.

1318271 is a deficient number, since it is larger than the sum of its proper divisors (21673).

1318271 is an equidigital number, since it uses as much as digits as its factorization.

1318271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21672.

The product of its digits is 336, while the sum is 23.

The square root of 1318271 is about 1148.1598320791. The cubic root of 1318271 is about 109.6482150180.

The spelling of 1318271 in words is "one million, three hundred eighteen thousand, two hundred seventy-one".