115131799 has 4 divisors (see below), whose sum is σ = 118845760. Its totient is φ = 111417840.

The previous prime is 115131763. The next prime is 115131817. The reversal of 115131799 is 997131511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 115131799 - 2⁷ = 115131671 is a prime.

It is a super-2 number, since 2×115131799² = 26510662281952802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115131739) 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, 1856934 + ... + 1856995.

It is an arithmetic number, because the mean of its divisors is an integer number (29711440).

Almost surely, 2^115131799 is an apocalyptic number.

115131799 is a deficient number, since it is larger than the sum of its proper divisors (3713961).

115131799 is an equidigital number, since it uses as much as digits as its factorization.

115131799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3713960.

The product of its digits is 8505, while the sum is 37.

The square root of 115131799 is about 10729.9486951243. The cubic root of 115131799 is about 486.4801193346.

The spelling of 115131799 in words is "one hundred fifteen million, one hundred thirty-one thousand, seven hundred ninety-nine".