1312771 has 4 divisors (see below), whose sum is σ = 1369872. Its totient is φ = 1255672.

The previous prime is 1312769. The next prime is 1312777. The reversal of 1312771 is 1772131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1772131 = 17 ⋅104243.

It is a cyclic number.

It is not a de Polignac number, because 1312771 - 2¹ = 1312769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28516 + ... + 28561.

It is an arithmetic number, because the mean of its divisors is an integer number (342468).

2^1312771 is an apocalyptic number.

1312771 is a deficient number, since it is larger than the sum of its proper divisors (57101).

1312771 is an equidigital number, since it uses as much as digits as its factorization.

1312771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57100.

The product of its digits is 294, while the sum is 22.

The square root of 1312771 is about 1145.7621917309. The cubic root of 1312771 is about 109.4955135322.

The spelling of 1312771 in words is "one million, three hundred twelve thousand, seven hundred seventy-one".