115127681 has 4 divisors (see below), whose sum is σ = 115900500. Its totient is φ = 114354864.

The previous prime is 115127671. The next prime is 115127687. The reversal of 115127681 is 186721511.

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 4036081 + 111091600 = 2009^2 + 10540^2 .

It is a cyclic number.

It is not a de Polignac number, because 115127681 - 2¹⁰ = 115126657 is a prime.

It is a super-2 number, since 2×115127681² = 26508765864875522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115127687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 386186 + ... + 386483.

It is an arithmetic number, because the mean of its divisors is an integer number (28975125).

Almost surely, 2^115127681 is an apocalyptic number.

It is an amenable number.

115127681 is a deficient number, since it is larger than the sum of its proper divisors (772819).

115127681 is an equidigital number, since it uses as much as digits as its factorization.

115127681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772818.

The product of its digits is 3360, while the sum is 32.

The square root of 115127681 is about 10729.7568005990. The cubic root of 115127681 is about 486.4743191733.

The spelling of 115127681 in words is "one hundred fifteen million, one hundred twenty-seven thousand, six hundred eighty-one".