1311013031311 has 4 divisors (see below), whose sum is σ = 1318863408912. Its totient is φ = 1303162653712.

The previous prime is 1311013031291. The next prime is 1311013031351. The reversal of 1311013031311 is 1131303101131.

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 1311013031311 - 2³⁷ = 1173574077839 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 (1311013031351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3925188550 + ... + 3925188883.

It is an arithmetic number, because the mean of its divisors is an integer number (329715852228).

Almost surely, 2^{1311013031311} is an apocalyptic number.

1311013031311 is a deficient number, since it is larger than the sum of its proper divisors (7850377601).

1311013031311 is an equidigital number, since it uses as much as digits as its factorization.

1311013031311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7850377600.

The product of its (nonzero) digits is 81, while the sum is 19.

Adding to 1311013031311 its reverse (1131303101131), we get a palindrome (2442316132442).

The spelling of 1311013031311 in words is "one trillion, three hundred eleven billion, thirteen million, thirty-one thousand, three hundred eleven".