1311326553303 has 48 divisors (see below), whose sum is σ = 2070735934176. Its totient is φ = 794753372160.

The previous prime is 1311326553259. The next prime is 1311326553331. The reversal of 1311326553303 is 3033556231131.

1311326553303 is a `hidden beast` number, since 1 + 3 + 113 + 2 + 6 + 5 + 533 + 0 + 3 = 666.

It is not a de Polignac number, because 1311326553303 - 2¹⁰ = 1311326552279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311326555303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 42448423 + ... + 42479303.

It is an arithmetic number, because the mean of its divisors is an integer number (43140331962).

Almost surely, 2^{1311326553303} is an apocalyptic number.

1311326553303 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1311326553303 is a deficient number, since it is larger than the sum of its proper divisors (759409380873).

1311326553303 is a wasteful number, since it uses less digits than its factorization.

1311326553303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36384 (or 36381 counting only the distinct ones).

The product of its (nonzero) digits is 72900, while the sum is 36.

The spelling of 1311326553303 in words is "one trillion, three hundred eleven billion, three hundred twenty-six million, five hundred fifty-three thousand, three hundred three".