1311213101311 has 4 divisors (see below), whose sum is σ = 1317427381624. Its totient is φ = 1304998821000.

The previous prime is 1311213101267. The next prime is 1311213101459. The reversal of 1311213101311 is 1131013121131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311213101311 is a prime.

It is a super-2 number, since 2×1311213101311² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311213101711) 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, 3107139840 + ... + 3107140261.

It is an arithmetic number, because the mean of its divisors is an integer number (329356845406).

Almost surely, 2^{1311213101311} is an apocalyptic number.

1311213101311 is a deficient number, since it is larger than the sum of its proper divisors (6214280313).

1311213101311 is an equidigital number, since it uses as much as digits as its factorization.

1311213101311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6214280312.

The product of its (nonzero) digits is 54, while the sum is 19.

Adding to 1311213101311 its reverse (1131013121131), we get a palindrome (2442226222442).

The spelling of 1311213101311 in words is "one trillion, three hundred eleven billion, two hundred thirteen million, one hundred one thousand, three hundred eleven".