115203013 has 4 divisors (see below), whose sum is σ = 115239040. Its totient is φ = 115166988.

The previous prime is 115202981. The next prime is 115203017. The reversal of 115203013 is 310302511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 115203013 - 2⁵ = 115202981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115203017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12693 + ... + 19786.

It is an arithmetic number, because the mean of its divisors is an integer number (28809760).

Almost surely, 2^115203013 is an apocalyptic number.

It is an amenable number.

115203013 is a deficient number, since it is larger than the sum of its proper divisors (36027).

115203013 is an equidigital number, since it uses as much as digits as its factorization.

115203013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36026.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 115203013 is about 10733.2666509316. The cubic root of 115203013 is about 486.5804016632.

Adding to 115203013 its reverse (310302511), we get a palindrome (425505524).

The spelling of 115203013 in words is "one hundred fifteen million, two hundred three thousand, thirteen".