203113 has 4 divisors (see below), whose sum is σ = 211968. Its totient is φ = 194260.

The previous prime is 203057. The next prime is 203117. The reversal of 203113 is 311302.

203113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-203113 is a prime.

203113 is a lucky number.

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 203113.

It is not an unprimeable number, because it can be changed into a prime (203117) 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, 4393 + ... + 4438.

It is an arithmetic number, because the mean of its divisors is an integer number (52992).

2²⁰³¹¹³ is an apocalyptic number.

203113 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

203113 is a deficient number, since it is larger than the sum of its proper divisors (8855).

203113 is an equidigital number, since it uses as much as digits as its factorization.

203113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8854.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 203113 is about 450.6805964317. The cubic root of 203113 is about 58.7822095901.

Adding to 203113 its reverse (311302), we get a palindrome (514415).

The spelling of 203113 in words is "two hundred three thousand, one hundred thirteen".