204371143 has 4 divisors (see below), whose sum is σ = 206478160. Its totient is φ = 202264128.

The previous prime is 204371137. The next prime is 204371179. The reversal of 204371143 is 341173402.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204371143 is a prime.

It is a super-2 number, since 2×204371143² = 83535128182252898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204371113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1053363 + ... + 1053556.

It is an arithmetic number, because the mean of its divisors is an integer number (51619540).

Almost surely, 2^204371143 is an apocalyptic number.

204371143 is a deficient number, since it is larger than the sum of its proper divisors (2107017).

204371143 is an equidigital number, since it uses as much as digits as its factorization.

204371143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2107016.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 204371143 is about 14295.8435567825. The cubic root of 204371143 is about 589.0333140580.

The spelling of 204371143 in words is "two hundred four million, three hundred seventy-one thousand, one hundred forty-three".