13231131211 has 4 divisors (see below), whose sum is σ = 13231439424. Its totient is φ = 13230823000.

The previous prime is 13231131191. The next prime is 13231131227. The reversal of 13231131211 is 11213113231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11213113231 = 103 ⋅108865177.

It is a cyclic number.

It is not a de Polignac number, because 13231131211 - 2³³ = 4641196619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13231131281) 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, 76780 + ... + 179881.

It is an arithmetic number, because the mean of its divisors is an integer number (3307859856).

Almost surely, 2^13231131211 is an apocalyptic number.

13231131211 is a deficient number, since it is larger than the sum of its proper divisors (308213).

13231131211 is an equidigital number, since it uses as much as digits as its factorization.

13231131211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308212.

The product of its digits is 108, while the sum is 19.

Adding to 13231131211 its reverse (11213113231), we get a palindrome (24444244442).

The spelling of 13231131211 in words is "thirteen billion, two hundred thirty-one million, one hundred thirty-one thousand, two hundred eleven".