115530203 has 4 divisors (see below), whose sum is σ = 121610760. Its totient is φ = 109449648.

The previous prime is 115530199. The next prime is 115530253. The reversal of 115530203 is 302035511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 302035511 = 31 ⋅9743081.

It is a cyclic number.

It is not a de Polignac number, because 115530203 - 2² = 115530199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115530253) 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, 3040250 + ... + 3040287.

It is an arithmetic number, because the mean of its divisors is an integer number (30402690).

Almost surely, 2^115530203 is an apocalyptic number.

115530203 is a deficient number, since it is larger than the sum of its proper divisors (6080557).

115530203 is an equidigital number, since it uses as much as digits as its factorization.

115530203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6080556.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 115530203 is about 10748.4977089824. The cubic root of 115530203 is about 487.0406146249.

Adding to 115530203 its reverse (302035511), we get a palindrome (417565714).

The spelling of 115530203 in words is "one hundred fifteen million, five hundred thirty thousand, two hundred three".