1311767 has 2 divisors, whose sum is σ = 1311768. Its totient is φ = 1311766.

The previous prime is 1311749. The next prime is 1311769. The reversal of 1311767 is 7671131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1311767 - 2¹² = 1307671 is a prime.

Together with 1311769, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1311769) 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, 655883 + 655884.

It is an arithmetic number, because the mean of its divisors is an integer number (655884).

2^1311767 is an apocalyptic number.

1311767 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311767 is an equidigital number, since it uses as much as digits as its factorization.

1311767 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 882, while the sum is 26.

The square root of 1311767 is about 1145.3239716342. The cubic root of 1311767 is about 109.4675925587.

Adding to 1311767 its reverse (7671131), we get a palindrome (8982898).

The spelling of 1311767 in words is "one million, three hundred eleven thousand, seven hundred sixty-seven".