2120131113 has 4 divisors (see below), whose sum is σ = 2826841488. Its totient is φ = 1413420740.

The previous prime is 2120131109. The next prime is 2120131147. The reversal of 2120131113 is 3111310212.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2120131113 - 2² = 2120131109 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2120131092 and 2120131101.

It is not an unprimeable number, because it can be changed into a prime (2120131103) 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, 353355183 + ... + 353355188.

It is an arithmetic number, because the mean of its divisors is an integer number (706710372).

Almost surely, 2^2120131113 is an apocalyptic number.

It is an amenable number.

2120131113 is a deficient number, since it is larger than the sum of its proper divisors (706710375).

2120131113 is an equidigital number, since it uses as much as digits as its factorization.

2120131113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706710374.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 2120131113 is about 46044.8815070687. The cubic root of 2120131113 is about 1284.6581401713.

Adding to 2120131113 its reverse (3111310212), we get a palindrome (5231441325).

The spelling of 2120131113 in words is "two billion, one hundred twenty million, one hundred thirty-one thousand, one hundred thirteen".