203113113 has 32 divisors (see below), whose sum is σ = 315955200. Its totient is φ = 113667840.

The previous prime is 203113111. The next prime is 203113133. The reversal of 203113113 is 311311302.

It is not a de Polignac number, because 203113113 - 2¹ = 203113111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 203113092 and 203113101.

It is not an unprimeable number, because it can be changed into a prime (203113111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 338788 + ... + 339386.

It is an arithmetic number, because the mean of its divisors is an integer number (9873600).

Almost surely, 2^203113113 is an apocalyptic number.

It is an amenable number.

203113113 is a deficient number, since it is larger than the sum of its proper divisors (112842087).

203113113 is a wasteful number, since it uses less digits than its factorization.

203113113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 917.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 203113113 is about 14251.7757840909. The cubic root of 203113113 is about 587.8222049104.

Adding to 203113113 its reverse (311311302), we get a palindrome (514424415).

The spelling of 203113113 in words is "two hundred three million, one hundred thirteen thousand, one hundred thirteen".