1313021312311 has 4 divisors (see below), whose sum is σ = 1390257860112. Its totient is φ = 1235784764512.

The previous prime is 1313021312269. The next prime is 1313021312327. The reversal of 1313021312311 is 1132131203131.

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 1313021312311 - 2⁹ = 1313021311799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313021312711) 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 3 ways as a sum of consecutive naturals, for example, 38618273875 + ... + 38618273908.

It is an arithmetic number, because the mean of its divisors is an integer number (347564465028).

Almost surely, 2^{1313021312311} is an apocalyptic number.

1313021312311 is a deficient number, since it is larger than the sum of its proper divisors (77236547801).

1313021312311 is an equidigital number, since it uses as much as digits as its factorization.

1313021312311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77236547800.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 1313021312311 its reverse (1132131203131), we get a palindrome (2445152515442).

The spelling of 1313021312311 in words is "one trillion, three hundred thirteen billion, twenty-one million, three hundred twelve thousand, three hundred eleven".