204531123 has 8 divisors (see below), whose sum is σ = 272922048. Its totient is φ = 136247144.

The previous prime is 204531077. The next prime is 204531127. The reversal of 204531123 is 321135402.

204531123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 204531123 - 2¹³ = 204522931 is a prime.

It is a super-2 number, since 2×204531123² = 83665960551282258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 204531123.

It is not an unprimeable number, because it can be changed into a prime (204531127) 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, 22161 + ... + 30002.

It is an arithmetic number, because the mean of its divisors is an integer number (34115256).

Almost surely, 2^204531123 is an apocalyptic number.

204531123 is a deficient number, since it is larger than the sum of its proper divisors (68390925).

204531123 is a wasteful number, since it uses less digits than its factorization.

204531123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53473.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 204531123 is about 14301.4377948513. The cubic root of 204531123 is about 589.1869707345.

Adding to 204531123 its reverse (321135402), we get a palindrome (525666525).

The spelling of 204531123 in words is "two hundred four million, five hundred thirty-one thousand, one hundred twenty-three".