1311402303 has 12 divisors (see below), whose sum is σ = 1897449840. Its totient is φ = 872790336.

The previous prime is 1311402299. The next prime is 1311402329. The reversal of 1311402303 is 3032041131.

It is not a de Polignac number, because 1311402303 - 2² = 1311402299 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311402353) 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 in 11 ways as a sum of consecutive naturals, for example, 117523 + ... + 128196.

It is an arithmetic number, because the mean of its divisors is an integer number (158120820).

Almost surely, 2^1311402303 is an apocalyptic number.

1311402303 is a deficient number, since it is larger than the sum of its proper divisors (586047537).

1311402303 is a wasteful number, since it uses less digits than its factorization.

1311402303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246318 (or 246315 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1311402303 is about 36213.2890386941. The cubic root of 1311402303 is about 1094.5744690451.

Adding to 1311402303 its reverse (3032041131), we get a palindrome (4343443434).

The spelling of 1311402303 in words is "one billion, three hundred eleven million, four hundred two thousand, three hundred three".