116115831 has 24 divisors (see below), whose sum is σ = 191252880. Its totient is φ = 67251456.

The previous prime is 116115823. The next prime is 116115833. The reversal of 116115831 is 138511611.

It is a happy number.

116115831 is a `hidden beast` number, since 11 + 611 + 5 + 8 + 31 = 666.

It is not a de Polignac number, because 116115831 - 2³ = 116115823 is a prime.

It is a super-2 number, since 2×116115831² = 26965772417641122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 116115795 and 116115804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116115833) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27201 + ... + 31178.

It is an arithmetic number, because the mean of its divisors is an integer number (7968870).

Almost surely, 2^116115831 is an apocalyptic number.

116115831 is a deficient number, since it is larger than the sum of its proper divisors (75137049).

116115831 is a wasteful number, since it uses less digits than its factorization.

116115831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58415 (or 58412 counting only the distinct ones).

The product of its digits is 720, while the sum is 27.

The square root of 116115831 is about 10775.7055917466. The cubic root of 116115831 is about 487.8621718955.

The spelling of 116115831 in words is "one hundred sixteen million, one hundred fifteen thousand, eight hundred thirty-one".