204231123 has 12 divisors (see below), whose sum is σ = 301861560. Its totient is φ = 132987456.

The previous prime is 204231109. The next prime is 204231161. The reversal of 204231123 is 321132402.

It is not a de Polignac number, because 204231123 - 2⁵ = 204231091 is a prime.

It is a super-2 number, since 2×204231123² = 83420703203682258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 204231096 and 204231105.

It is not an unprimeable number, because it can be changed into a prime (204231173) by changing a digit.

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, 263478 + ... + 264251.

It is an arithmetic number, because the mean of its divisors is an integer number (25155130).

Almost surely, 2^204231123 is an apocalyptic number.

204231123 is a deficient number, since it is larger than the sum of its proper divisors (97630437).

204231123 is a wasteful number, since it uses less digits than its factorization.

204231123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527778 (or 527775 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 204231123 is about 14290.9454900647. The cubic root of 204231123 is about 588.8987626300.

Adding to 204231123 its reverse (321132402), we get a palindrome (525363525).

The spelling of 204231123 in words is "two hundred four million, two hundred thirty-one thousand, one hundred twenty-three".