2130113081 has 2 divisors, whose sum is σ = 2130113082. Its totient is φ = 2130113080.

The previous prime is 2130113077. The next prime is 2130113149. The reversal of 2130113081 is 1803110312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1928615056 + 201498025 = 43916^2 + 14195^2 .

It is a cyclic number.

It is not a de Polignac number, because 2130113081 - 2² = 2130113077 is a prime.

It is a super-2 number, since 2×2130113081² = 9074763475694625122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2130113281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065056540 + 1065056541.

It is an arithmetic number, because the mean of its divisors is an integer number (1065056541).

Almost surely, 2^2130113081 is an apocalyptic number.

It is an amenable number.

2130113081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2130113081 is an equidigital number, since it uses as much as digits as its factorization.

2130113081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 2130113081 is about 46153.1481158111. The cubic root of 2130113081 is about 1286.6711200669.

Adding to 2130113081 its reverse (1803110312), we get a palindrome (3933223393).

The spelling of 2130113081 in words is "two billion, one hundred thirty million, one hundred thirteen thousand, eighty-one".