1311031201313 has 4 divisors (see below), whose sum is σ = 1338925482240. Its totient is φ = 1283136920388.

The previous prime is 1311031201303. The next prime is 1311031201339. The reversal of 1311031201313 is 3131021301131.

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 1311031201313 - 2¹⁰ = 1311031200289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311031201303) 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 3 ways as a sum of consecutive naturals, for example, 13947140393 + ... + 13947140486.

It is an arithmetic number, because the mean of its divisors is an integer number (334731370560).

Almost surely, 2^{1311031201313} is an apocalyptic number.

It is an amenable number.

1311031201313 is a deficient number, since it is larger than the sum of its proper divisors (27894280927).

1311031201313 is an equidigital number, since it uses as much as digits as its factorization.

1311031201313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27894280926.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 1311031201313 its reverse (3131021301131), we get a palindrome (4442052502444).

The spelling of 1311031201313 in words is "one trillion, three hundred eleven billion, thirty-one million, two hundred one thousand, three hundred thirteen".