200131113121 has 4 divisors (see below), whose sum is σ = 200200198212. Its totient is φ = 200062028032.

The previous prime is 200131113079. The next prime is 200131113131. The reversal of 200131113121 is 121311131002.

It is a happy number.

200131113121 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, and also an emirpimes, since its reverse is a distinct semiprime: 121311131002 = 2 ⋅60655565501.

It can be written as a sum of positive squares in 2 ways, for example, as 34535018896 + 165596094225 = 185836^2 + 406935^2 .

It is a cyclic number.

It is not a de Polignac number, because 200131113121 - 2²³ = 200122724513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200131113095 and 200131113104.

It is not an unprimeable number, because it can be changed into a prime (200131113131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34538200 + ... + 34543993.

It is an arithmetic number, because the mean of its divisors is an integer number (50050049553).

Almost surely, 2^200131113121 is an apocalyptic number.

It is an amenable number.

200131113121 is a deficient number, since it is larger than the sum of its proper divisors (69085091).

200131113121 is an equidigital number, since it uses as much as digits as its factorization.

200131113121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69085090.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 200131113121 its reverse (121311131002), we get a palindrome (321442244123).

The spelling of 200131113121 in words is "two hundred billion, one hundred thirty-one million, one hundred thirteen thousand, one hundred twenty-one".