13111231310211 has 4 divisors (see below), whose sum is σ = 17481641746952. Its totient is φ = 8740820873472.

The previous prime is 13111231310171. The next prime is 13111231310227. The reversal of 13111231310211 is 11201313211131.

13111231310211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 13111231310211 - 2¹⁹ = 13111230785923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13111231310231) 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, 2185205218366 + ... + 2185205218371.

It is an arithmetic number, because the mean of its divisors is an integer number (4370410436738).

Almost surely, 2^{13111231310211} is an apocalyptic number.

13111231310211 is a deficient number, since it is larger than the sum of its proper divisors (4370410436741).

13111231310211 is an equidigital number, since it uses as much as digits as its factorization.

13111231310211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4370410436740.

The product of its (nonzero) digits is 108, while the sum is 21.

Adding to 13111231310211 its reverse (11201313211131), we get a palindrome (24312544521342).

The spelling of 13111231310211 in words is "thirteen trillion, one hundred eleven billion, two hundred thirty-one million, three hundred ten thousand, two hundred eleven".