115998331 has 4 divisors (see below), whose sum is σ = 116087464. Its totient is φ = 115909200.

The previous prime is 115998329. The next prime is 115998341. The reversal of 115998331 is 133899511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133899511 = 239 ⋅560249.

It is a cyclic number.

It is not a de Polignac number, because 115998331 - 2¹ = 115998329 is a prime.

It is a super-2 number, since 2×115998331² = 26911225589571122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115998301) 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, 42585 + ... + 45226.

It is an arithmetic number, because the mean of its divisors is an integer number (29021866).

Almost surely, 2^115998331 is an apocalyptic number.

115998331 is a deficient number, since it is larger than the sum of its proper divisors (89133).

115998331 is an equidigital number, since it uses as much as digits as its factorization.

115998331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89132.

The product of its digits is 29160, while the sum is 40.

The square root of 115998331 is about 10770.2521326105. The cubic root of 115998331 is about 487.6975570986.

The spelling of 115998331 in words is "one hundred fifteen million, nine hundred ninety-eight thousand, three hundred thirty-one".