204143161 has 2 divisors, whose sum is σ = 204143162. Its totient is φ = 204143160.

The previous prime is 204143131. The next prime is 204143167. The reversal of 204143161 is 161341402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 200364025 + 3779136 = 14155^2 + 1944^2 .

It is a cyclic number.

It is not a de Polignac number, because 204143161 - 2⁷ = 204143033 is a prime.

It is not a weakly prime, because it can be changed into another prime (204143167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102071580 + 102071581.

It is an arithmetic number, because the mean of its divisors is an integer number (102071581).

Almost surely, 2^204143161 is an apocalyptic number.

It is an amenable number.

204143161 is a deficient number, since it is larger than the sum of its proper divisors (1).

204143161 is an equidigital number, since it uses as much as digits as its factorization.

204143161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 204143161 is about 14287.8676155681. The cubic root of 204143161 is about 588.8142045881.

Adding to 204143161 its reverse (161341402), we get a palindrome (365484563).

It can be divided in two parts, 204143 and 161, that added together give a square (204304 = 452²).

The spelling of 204143161 in words is "two hundred four million, one hundred forty-three thousand, one hundred sixty-one".