1311173 has 2 divisors, whose sum is σ = 1311174. Its totient is φ = 1311172.

The previous prime is 1311143. The next prime is 1311181. The reversal of 1311173 is 3711131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1295044 + 16129 = 1138^2 + 127^2 .

It is an emirp because it is prime and its reverse (3711131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1311173 - 2⁶ = 1311109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1311103) 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 as a sum of consecutive naturals, namely, 655586 + 655587.

It is an arithmetic number, because the mean of its divisors is an integer number (655587).

2^1311173 is an apocalyptic number.

It is an amenable number.

1311173 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311173 is an equidigital number, since it uses as much as digits as its factorization.

1311173 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1311173 is about 1145.0646269971. The cubic root of 1311173 is about 109.4510668679.

The spelling of 1311173 in words is "one million, three hundred eleven thousand, one hundred seventy-three".