115031155 has 4 divisors (see below), whose sum is σ = 138037392. Its totient is φ = 92024920.

The previous prime is 115031153. The next prime is 115031159. The reversal of 115031155 is 551130511.

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

It is not a de Polignac number, because 115031155 - 2¹ = 115031153 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115031153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11503111 + ... + 11503120.

It is an arithmetic number, because the mean of its divisors is an integer number (34509348).

Almost surely, 2^115031155 is an apocalyptic number.

115031155 is a deficient number, since it is larger than the sum of its proper divisors (23006237).

115031155 is an equidigital number, since it uses as much as digits as its factorization.

115031155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23006236.

The product of its (nonzero) digits is 375, while the sum is 22.

The square root of 115031155 is about 10725.2578057593. The cubic root of 115031155 is about 486.3383236442.

Adding to 115031155 its reverse (551130511), we get a palindrome (666161666).

The spelling of 115031155 in words is "one hundred fifteen million, thirty-one thousand, one hundred fifty-five".