203240231 has 6 divisors (see below), whose sum is σ = 208078560. Its totient is φ = 198511908.

The previous prime is 203240221. The next prime is 203240237. The reversal of 203240231 is 132042302.

203240231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 203240231 - 2¹⁴ = 203223847 is a prime.

It is a super-2 number, since 2×203240231² = 82613182993866722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203240237) 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, 53111 + ... + 56808.

It is an arithmetic number, because the mean of its divisors is an integer number (34679760).

Almost surely, 2^203240231 is an apocalyptic number.

203240231 is a deficient number, since it is larger than the sum of its proper divisors (4838329).

203240231 is an equidigital number, since it uses as much as digits as its factorization.

203240231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110005 (or 109962 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 203240231 is about 14256.2348114781. The cubic root of 203240231 is about 587.9448085162.

Adding to 203240231 its reverse (132042302), we get a palindrome (335282533).

The spelling of 203240231 in words is "two hundred three million, two hundred forty thousand, two hundred thirty-one".