203113361 has 8 divisors (see below), whose sum is σ = 229219200. Its totient is φ = 178281040.

The previous prime is 203113343. The next prime is 203113369. The reversal of 203113361 is 163311302.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 203113361 - 2¹⁸ = 202851217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203113369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 318041 + ... + 318678.

It is an arithmetic number, because the mean of its divisors is an integer number (28652400).

Almost surely, 2^203113361 is an apocalyptic number.

It is an amenable number.

203113361 is a deficient number, since it is larger than the sum of its proper divisors (26105839).

203113361 is a wasteful number, since it uses less digits than its factorization.

203113361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636759.

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

The square root of 203113361 is about 14251.7844847584. The cubic root of 203113361 is about 587.8224441529.

Adding to 203113361 its reverse (163311302), we get a palindrome (366424663).

It can be divided in two parts, 20 and 3113361, that multiplied together give a triangular number (62267220 = T₁₁₁₅₉).

The spelling of 203113361 in words is "two hundred three million, one hundred thirteen thousand, three hundred sixty-one".