131311311211 has 4 divisors (see below), whose sum is σ = 131313313912. Its totient is φ = 131309308512.

The previous prime is 131311311191. The next prime is 131311311251. The reversal of 131311311211 is 112113113131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112113113131 = 3803 ⋅29480177.

It is a cyclic number.

It is not a de Polignac number, because 131311311211 - 2²⁹ = 130774440299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131311311251) 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, 899550 + ... + 1035283.

It is an arithmetic number, because the mean of its divisors is an integer number (32828328478).

Almost surely, 2^131311311211 is an apocalyptic number.

131311311211 is a deficient number, since it is larger than the sum of its proper divisors (2002701).

131311311211 is an equidigital number, since it uses as much as digits as its factorization.

131311311211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2002700.

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

Adding to 131311311211 its reverse (112113113131), we get a palindrome (243424424342).

The spelling of 131311311211 in words is "one hundred thirty-one billion, three hundred eleven million, three hundred eleven thousand, two hundred eleven".