1331313321303 has 32 divisors (see below), whose sum is σ = 2331802214400. Its totient is φ = 734517691488.

The previous prime is 1331313321271. The next prime is 1331313321323. The reversal of 1331313321303 is 3031233131331.

1331313321303 is a `hidden beast` number, since 1 + 3 + 3 + 1 + 31 + 3 + 321 + 303 = 666.

It is not a de Polignac number, because 1331313321303 - 2⁵ = 1331313321271 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331313321323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 121442551 + ... + 121453512.

It is an arithmetic number, because the mean of its divisors is an integer number (72868819200).

Almost surely, 2^{1331313321303} is an apocalyptic number.

1331313321303 is a deficient number, since it is larger than the sum of its proper divisors (1000488893097).

1331313321303 is a wasteful number, since it uses less digits than its factorization.

1331313321303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242896108 (or 242896102 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 27.

Adding to 1331313321303 its reverse (3031233131331), we get a palindrome (4362546452634).

The spelling of 1331313321303 in words is "one trillion, three hundred thirty-one billion, three hundred thirteen million, three hundred twenty-one thousand, three hundred three".