113800081 has 2 divisors, whose sum is σ = 113800082. Its totient is φ = 113800080.

The previous prime is 113800073. The next prime is 113800087. The reversal of 113800081 is 180008311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97121025 + 16679056 = 9855^2 + 4084^2 .

It is a cyclic number.

It is not a de Polignac number, because 113800081 - 2³ = 113800073 is a prime.

It is a super-2 number, since 2×113800081² = 25900916871213122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (113800087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56900040 + 56900041.

It is an arithmetic number, because the mean of its divisors is an integer number (56900041).

Almost surely, 2^113800081 is an apocalyptic number.

It is an amenable number.

113800081 is a deficient number, since it is larger than the sum of its proper divisors (1).

113800081 is an equidigital number, since it uses as much as digits as its factorization.

113800081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 22.

The square root of 113800081 is about 10667.7120789793. The cubic root of 113800081 is about 484.5971515754.

Adding to 113800081 its reverse (180008311), we get a palindrome (293808392).

The spelling of 113800081 in words is "one hundred thirteen million, eight hundred thousand, eighty-one".