203420113 has 16 divisors (see below), whose sum is σ = 232485120. Its totient is φ = 176322816.

The previous prime is 203420111. The next prime is 203420131. The reversal of 203420113 is 311024302.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 203420113 - 2¹ = 203420111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203420111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136056 + ... + 137542.

It is an arithmetic number, because the mean of its divisors is an integer number (14530320).

Almost surely, 2^203420113 is an apocalyptic number.

It is an amenable number.

203420113 is a deficient number, since it is larger than the sum of its proper divisors (29065007).

203420113 is a wasteful number, since it uses less digits than its factorization.

203420113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2136.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 203420113 is about 14262.5423049329. The cubic root of 203420113 is about 588.1182149672.

Adding to 203420113 its reverse (311024302), we get a palindrome (514444415).

The spelling of 203420113 in words is "two hundred three million, four hundred twenty thousand, one hundred thirteen".