1311682717 has 2 divisors, whose sum is σ = 1311682718. Its totient is φ = 1311682716.

The previous prime is 1311682699. The next prime is 1311682733. The reversal of 1311682717 is 7172861131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1048399641 + 263283076 = 32379^2 + 16226^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311682717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1311682777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655841358 + 655841359.

It is an arithmetic number, because the mean of its divisors is an integer number (655841359).

Almost surely, 2^1311682717 is an apocalyptic number.

It is an amenable number.

1311682717 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311682717 is an equidigital number, since it uses as much as digits as its factorization.

1311682717 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14112, while the sum is 37.

The square root of 1311682717 is about 36217.1605319909. The cubic root of 1311682717 is about 1094.6524802270.

The spelling of 1311682717 in words is "one billion, three hundred eleven million, six hundred eighty-two thousand, seven hundred seventeen".