1311327763 has 4 divisors (see below), whose sum is σ = 1311586720. Its totient is φ = 1311068808.

The previous prime is 1311327739. The next prime is 1311327779. The reversal of 1311327763 is 3677231131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1311327763 - 2²⁵ = 1277773331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311327263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121728 + ... + 132061.

It is an arithmetic number, because the mean of its divisors is an integer number (327896680).

Almost surely, 2^1311327763 is an apocalyptic number.

1311327763 is a deficient number, since it is larger than the sum of its proper divisors (258957).

1311327763 is an equidigital number, since it uses as much as digits as its factorization.

1311327763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258956.

The product of its digits is 15876, while the sum is 34.

The square root of 1311327763 is about 36212.2598438706. The cubic root of 1311327763 is about 1094.5537301443.

Adding to 1311327763 its reverse (3677231131), we get a palindrome (4988558894).

The spelling of 1311327763 in words is "one billion, three hundred eleven million, three hundred twenty-seven thousand, seven hundred sixty-three".