203613113 has 6 divisors (see below), whose sum is σ = 223806282. Its totient is φ = 185102720.

The previous prime is 203613107. The next prime is 203613187. The reversal of 203613113 is 311316302.

It is a happy number.

203613113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 135187129 + 68425984 = 11627^2 + 8272^2 .

It is not a de Polignac number, because 203613113 - 2¹⁰ = 203612089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203613013) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 841256 + ... + 841497.

It is an arithmetic number, because the mean of its divisors is an integer number (37301047).

Almost surely, 2^203613113 is an apocalyptic number.

It is an amenable number.

203613113 is a deficient number, since it is larger than the sum of its proper divisors (20193169).

203613113 is a wasteful number, since it uses less digits than its factorization.

203613113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1682775 (or 1682764 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 203613113 is about 14269.3066755186. The cubic root of 203613113 is about 588.3041535407.

Adding to 203613113 its reverse (311316302), we get a palindrome (514929415).

It can be divided in two parts, 203 and 613113, that added together give a palindrome (613316).

The spelling of 203613113 in words is "two hundred three million, six hundred thirteen thousand, one hundred thirteen".