1311327739 has 2 divisors, whose sum is σ = 1311327740. Its totient is φ = 1311327738.

The previous prime is 1311327709. The next prime is 1311327779. The reversal of 1311327739 is 9377231131.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311327739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1311327698 and 1311327707.

It is not a weakly prime, because it can be changed into another prime (1311327709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655663869 + 655663870.

It is an arithmetic number, because the mean of its divisors is an integer number (655663870).

Almost surely, 2^1311327739 is an apocalyptic number.

1311327739 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311327739 is an equidigital number, since it uses as much as digits as its factorization.

1311327739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23814, while the sum is 37.

The square root of 1311327739 is about 36212.2595124911. The cubic root of 1311327739 is about 1094.5537234668.

The spelling of 1311327739 in words is "one billion, three hundred eleven million, three hundred twenty-seven thousand, seven hundred thirty-nine".