115131115 has 16 divisors (see below), whose sum is σ = 152845056. Its totient is φ = 82549600.

The previous prime is 115131113. The next prime is 115131119. The reversal of 115131115 is 511131511.

It is not a de Polignac number, because 115131115 - 2¹ = 115131113 is a prime.

It is a super-2 number, since 2×115131115² = 26510347282286450, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 115131092 and 115131101.

It is not an unprimeable number, because it can be changed into a prime (115131113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10837 + ... + 18646.

It is an arithmetic number, because the mean of its divisors is an integer number (9552816).

Almost surely, 2^115131115 is an apocalyptic number.

115131115 is a deficient number, since it is larger than the sum of its proper divisors (37713941).

115131115 is a wasteful number, since it uses less digits than its factorization.

115131115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29570.

The product of its digits is 75, while the sum is 19.

The square root of 115131115 is about 10729.9168216720. The cubic root of 115131115 is about 486.4791559371.

Adding to 115131115 its reverse (511131511), we get a palindrome (626262626).

The spelling of 115131115 in words is "one hundred fifteen million, one hundred thirty-one thousand, one hundred fifteen".