204163331 has 2 divisors, whose sum is σ = 204163332. Its totient is φ = 204163330.

The previous prime is 204163321. The next prime is 204163343. The reversal of 204163331 is 133361402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204163331 - 2¹⁴ = 204146947 is a prime.

It is a super-2 number, since 2×204163331² = 83365331450031122, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 204163297 and 204163306.

It is not a weakly prime, because it can be changed into another prime (204163301) 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 as a sum of consecutive naturals, namely, 102081665 + 102081666.

It is an arithmetic number, because the mean of its divisors is an integer number (102081666).

Almost surely, 2^204163331 is an apocalyptic number.

204163331 is a deficient number, since it is larger than the sum of its proper divisors (1).

204163331 is an equidigital number, since it uses as much as digits as its factorization.

204163331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 204163331 is about 14288.5734417401. The cubic root of 204163331 is about 588.8335961943.

The spelling of 204163331 in words is "two hundred four million, one hundred sixty-three thousand, three hundred thirty-one".