1331313321271 has 2 divisors, whose sum is σ = 1331313321272. Its totient is φ = 1331313321270.

The previous prime is 1331313321269. The next prime is 1331313321323. The reversal of 1331313321271 is 1721233131331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1331313321271 - 2¹ = 1331313321269 is a prime.

It is a super-2 number, since 2×1331313321271² (a number of 25 digits) contains 22 as substring.

Together with 1331313321269, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1331313421271) 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 as a sum of consecutive naturals, namely, 665656660635 + 665656660636.

It is an arithmetic number, because the mean of its divisors is an integer number (665656660636).

Almost surely, 2^{1331313321271} is an apocalyptic number.

1331313321271 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331313321271 is an equidigital number, since it uses as much as digits as its factorization.

1331313321271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6804, while the sum is 31.

The spelling of 1331313321271 in words is "one trillion, three hundred thirty-one billion, three hundred thirteen million, three hundred twenty-one thousand, two hundred seventy-one".