1311371 has 4 divisors (see below), whose sum is σ = 1341912. Its totient is φ = 1280832.

The previous prime is 1311367. The next prime is 1311377. The reversal of 1311371 is 1731131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1731131 = 83 ⋅20857.

It is a cyclic number.

It is not a de Polignac number, because 1311371 - 2² = 1311367 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15206 + ... + 15291.

It is an arithmetic number, because the mean of its divisors is an integer number (335478).

2^1311371 is an apocalyptic number.

1311371 is a deficient number, since it is larger than the sum of its proper divisors (30541).

1311371 is an equidigital number, since it uses as much as digits as its factorization.

1311371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30540.

The product of its digits is 63, while the sum is 17.

The square root of 1311371 is about 1145.1510817355. The cubic root of 1311371 is about 109.4565759860.

The spelling of 1311371 in words is "one million, three hundred eleven thousand, three hundred seventy-one".