2113488281 has 2 divisors, whose sum is σ = 2113488282. Its totient is φ = 2113488280.

The previous prime is 2113488257. The next prime is 2113488287. The reversal of 2113488281 is 1828843112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1257340681 + 856147600 = 35459^2 + 29260^2 .

It is a cyclic number.

It is not a de Polignac number, because 2113488281 - 2³⁰ = 1039746457 is a prime.

It is a super-2 number, since 2×2113488281² = 8933665427848669922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2113488287) 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 as a sum of consecutive naturals, namely, 1056744140 + 1056744141.

It is an arithmetic number, because the mean of its divisors is an integer number (1056744141).

Almost surely, 2^2113488281 is an apocalyptic number.

It is an amenable number.

2113488281 is a deficient number, since it is larger than the sum of its proper divisors (1).

2113488281 is an equidigital number, since it uses as much as digits as its factorization.

2113488281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24576, while the sum is 38.

The square root of 2113488281 is about 45972.6905999638. The cubic root of 2113488281 is about 1283.3150319685.

The spelling of 2113488281 in words is "two billion, one hundred thirteen million, four hundred eighty-eight thousand, two hundred eighty-one".