204031123 has 8 divisors (see below), whose sum is σ = 205374960. Its totient is φ = 202692000.

The previous prime is 204031109. The next prime is 204031133. The reversal of 204031123 is 321130402.

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 204031123 - 2²¹ = 201933971 is a prime.

It is a super-2 number, since 2×204031123² = 83257398305282258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204031097 and 204031106.

It is not an unprimeable number, because it can be changed into a prime (204031103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126961 + ... + 128557.

It is an arithmetic number, because the mean of its divisors is an integer number (25671870).

Almost surely, 2^204031123 is an apocalyptic number.

204031123 is a deficient number, since it is larger than the sum of its proper divisors (1343837).

204031123 is a wasteful number, since it uses less digits than its factorization.

204031123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2357.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 204031123 is about 14283.9463384598. The cubic root of 204031123 is about 588.7064670610.

Adding to 204031123 its reverse (321130402), we get a palindrome (525161525).

The spelling of 204031123 in words is "two hundred four million, thirty-one thousand, one hundred twenty-three".