13131204111 has 48 divisors (see below), whose sum is σ = 20256905760. Its totient is φ = 8495124480.

The previous prime is 13131204071. The next prime is 13131204143. The reversal of 13131204111 is 11140213131.

It is a happy number.

13131204111 is a `hidden beast` number, since 131 + 3 + 120 + 411 + 1 = 666.

13131204111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13131204111 - 2⁷ = 13131203983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13131204511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1919445 + ... + 1926273.

It is an arithmetic number, because the mean of its divisors is an integer number (422018870).

Almost surely, 2^13131204111 is an apocalyptic number.

13131204111 is a deficient number, since it is larger than the sum of its proper divisors (7125701649).

13131204111 is an equidigital number, since it uses as much as digits as its factorization.

13131204111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7078 (or 7066 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 13131204111 its reverse (11140213131), we get a palindrome (24271417242).

The spelling of 13131204111 in words is "thirteen billion, one hundred thirty-one million, two hundred four thousand, one hundred eleven".