1311047 has 2 divisors, whose sum is σ = 1311048. Its totient is φ = 1311046.

The previous prime is 1311043. The next prime is 1311053. The reversal of 1311047 is 7401131.

It is a weak prime.

It is an emirp because it is prime and its reverse (7401131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1311047 - 2² = 1311043 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1311043) 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, 655523 + 655524.

It is an arithmetic number, because the mean of its divisors is an integer number (655524).

2^1311047 is an apocalyptic number.

1311047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311047 is an equidigital number, since it uses as much as digits as its factorization.

1311047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 1311047 is about 1145.0096069466. The cubic root of 1311047 is about 109.4475607768.

Adding to 1311047 its product of nonzero digits (84), we get a palindrome (1311131).

Adding to 1311047 its reverse (7401131), we get a palindrome (8712178).

The spelling of 1311047 in words is "one million, three hundred eleven thousand, forty-seven".