115303138 has 4 divisors (see below), whose sum is σ = 172954710. Its totient is φ = 57651568.

The previous prime is 115303127. The next prime is 115303171. The reversal of 115303138 is 831303511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 831303511 = 25037 ⋅33203.

It can be written as a sum of positive squares in only one way, i.e., 112720689 + 2582449 = 10617^2 + 1607^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28825783 + ... + 28825786.

Almost surely, 2^115303138 is an apocalyptic number.

115303138 is a deficient number, since it is larger than the sum of its proper divisors (57651572).

115303138 is an equidigital number, since it uses as much as digits as its factorization.

115303138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57651571.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 115303138 is about 10737.9298749806. The cubic root of 115303138 is about 486.7213260890.

Adding to 115303138 its reverse (831303511), we get a palindrome (946606649).

The spelling of 115303138 in words is "one hundred fifteen million, three hundred three thousand, one hundred thirty-eight".