2120331113 has 4 divisors (see below), whose sum is σ = 2172046548. Its totient is φ = 2068615680.

The previous prime is 2120331041. The next prime is 2120331131. The reversal of 2120331113 is 3111330212.

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 651678784 + 1468652329 = 25528^2 + 38323^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120331113 - 2²² = 2116136809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2120331091 and 2120331100.

It is not an unprimeable number, because it can be changed into a prime (2120331013) 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, 25857656 + ... + 25857737.

It is an arithmetic number, because the mean of its divisors is an integer number (543011637).

Almost surely, 2^2120331113 is an apocalyptic number.

It is an amenable number.

2120331113 is a deficient number, since it is larger than the sum of its proper divisors (51715435).

2120331113 is an equidigital number, since it uses as much as digits as its factorization.

2120331113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51715434.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 2120331113 is about 46047.0532499095. The cubic root of 2120331113 is about 1284.6985344576.

Adding to 2120331113 its reverse (3111330212), we get a palindrome (5231661325).

Subtracting 2120331113 from its reverse (3111330212), we obtain a palindrome (990999099).

The spelling of 2120331113 in words is "two billion, one hundred twenty million, three hundred thirty-one thousand, one hundred thirteen".