204023143 has 4 divisors (see below), whose sum is σ = 209537320. Its totient is φ = 198508968.

The previous prime is 204023119. The next prime is 204023189. The reversal of 204023143 is 341320402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 204023143 - 2⁵ = 204023111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 204023143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204023243) 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 3 ways as a sum of consecutive naturals, for example, 2757033 + ... + 2757106.

It is an arithmetic number, because the mean of its divisors is an integer number (52384330).

Almost surely, 2^204023143 is an apocalyptic number.

204023143 is a deficient number, since it is larger than the sum of its proper divisors (5514177).

204023143 is an equidigital number, since it uses as much as digits as its factorization.

204023143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5514176.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 204023143 is about 14283.6670011591. The cubic root of 204023143 is about 588.6987918612.

Adding to 204023143 its reverse (341320402), we get a palindrome (545343545).

The spelling of 204023143 in words is "two hundred four million, twenty-three thousand, one hundred forty-three".