203230105 has 12 divisors (see below), whose sum is σ = 264079980. Its totient is φ = 150076992.

The previous prime is 203230091. The next prime is 203230123. The reversal of 203230105 is 501032302.

It can be written as a sum of positive squares in 6 ways, for example, as 20142144 + 183087961 = 4488^2 + 13531^2 .

It is not a de Polignac number, because 203230105 - 2¹⁷ = 203099033 is a prime.

It is a super-2 number, since 2×203230105² = 82604951156622050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 119410 + ... + 121099.

It is an arithmetic number, because the mean of its divisors is an integer number (22006665).

Almost surely, 2^203230105 is an apocalyptic number.

It is an amenable number.

203230105 is a deficient number, since it is larger than the sum of its proper divisors (60849875).

203230105 is a wasteful number, since it uses less digits than its factorization.

203230105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240540 (or 240527 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 203230105 is about 14255.8796641947. The cubic root of 203230105 is about 587.9350439993.

Adding to 203230105 its reverse (501032302), we get a palindrome (704262407).

The spelling of 203230105 in words is "two hundred three million, two hundred thirty thousand, one hundred five".