1311327263 has 2 divisors, whose sum is σ = 1311327264. Its totient is φ = 1311327262.

The previous prime is 1311327257. The next prime is 1311327289. The reversal of 1311327263 is 3627231131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1311327263 - 2⁴ = 1311327247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1311327223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655663631 + 655663632.

It is an arithmetic number, because the mean of its divisors is an integer number (655663632).

Almost surely, 2^1311327263 is an apocalyptic number.

1311327263 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311327263 is an equidigital number, since it uses as much as digits as its factorization.

1311327263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 29.

The square root of 1311327263 is about 36212.2529401306. The cubic root of 1311327263 is about 1094.5535910291.

Adding to 1311327263 its reverse (3627231131), we get a palindrome (4938558394).

The spelling of 1311327263 in words is "one billion, three hundred eleven million, three hundred twenty-seven thousand, two hundred sixty-three".