1311013321313 has 4 divisors (see below), whose sum is σ = 1341502003248. Its totient is φ = 1280524639380.

The previous prime is 1311013321309. The next prime is 1311013321333. The reversal of 1311013321313 is 3131233101131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1311013321313 - 2² = 1311013321309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311013321333) 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, 15244340903 + ... + 15244340988.

It is an arithmetic number, because the mean of its divisors is an integer number (335375500812).

Almost surely, 2^{1311013321313} is an apocalyptic number.

It is an amenable number.

1311013321313 is a deficient number, since it is larger than the sum of its proper divisors (30488681935).

1311013321313 is an equidigital number, since it uses as much as digits as its factorization.

1311013321313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30488681934.

The product of its (nonzero) digits is 486, while the sum is 23.

Adding to 1311013321313 its reverse (3131233101131), we get a palindrome (4442246422444).

The spelling of 1311013321313 in words is "one trillion, three hundred eleven billion, thirteen million, three hundred twenty-one thousand, three hundred thirteen".