131122311211 has 4 divisors (see below), whose sum is σ = 131148524952. Its totient is φ = 131096097472.

The previous prime is 131122311197. The next prime is 131122311247. The reversal of 131122311211 is 112113221131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112113221131 = 19 ⋅5900695849.

It is a cyclic number.

It is not a de Polignac number, because 131122311211 - 2⁷ = 131122311083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131122311251) 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, 13099366 + ... + 13109371.

It is an arithmetic number, because the mean of its divisors is an integer number (32787131238).

Almost surely, 2^131122311211 is an apocalyptic number.

131122311211 is a deficient number, since it is larger than the sum of its proper divisors (26213741).

131122311211 is an equidigital number, since it uses as much as digits as its factorization.

131122311211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26213740.

The product of its digits is 72, while the sum is 19.

Adding to 131122311211 its reverse (112113221131), we get a palindrome (243235532342).

The spelling of 131122311211 in words is "one hundred thirty-one billion, one hundred twenty-two million, three hundred eleven thousand, two hundred eleven".