12131100913 has 4 divisors (see below), whose sum is σ = 12134870388. Its totient is φ = 12127331440.

The previous prime is 12131100911. The next prime is 12131100953. The reversal of 12131100913 is 31900113121.

12131100913 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 can be written as a sum of positive squares in 2 ways, for example, as 8977941504 + 3153159409 = 94752^2 + 56153^2 .

It is a cyclic number.

It is not a de Polignac number, because 12131100913 - 2¹ = 12131100911 is a prime.

It is a super-2 number, since 2×12131100913² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12131100911) 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 3 ways as a sum of consecutive naturals, for example, 1879906 + ... + 1886347.

It is an arithmetic number, because the mean of its divisors is an integer number (3033717597).

Almost surely, 2^12131100913 is an apocalyptic number.

It is an amenable number.

12131100913 is a deficient number, since it is larger than the sum of its proper divisors (3769475).

12131100913 is an equidigital number, since it uses as much as digits as its factorization.

12131100913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3769474.

The product of its (nonzero) digits is 162, while the sum is 22.

The spelling of 12131100913 in words is "twelve billion, one hundred thirty-one million, one hundred thousand, nine hundred thirteen".