204350381 has 2 divisors, whose sum is σ = 204350382. Its totient is φ = 204350380.

The previous prime is 204350347. The next prime is 204350389. The reversal of 204350381 is 183053402.

204350381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 178756900 + 25593481 = 13370^2 + 5059^2 .

It is a cyclic number.

It is not a de Polignac number, because 204350381 - 2⁶ = 204350317 is a prime.

It is a super-2 number, since 2×204350381² = 83518156429690322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 204350381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204350389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102175190 + 102175191.

It is an arithmetic number, because the mean of its divisors is an integer number (102175191).

Almost surely, 2^204350381 is an apocalyptic number.

It is an amenable number.

204350381 is a deficient number, since it is larger than the sum of its proper divisors (1).

204350381 is an equidigital number, since it uses as much as digits as its factorization.

204350381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 204350381 is about 14295.1173832186. The cubic root of 204350381 is about 589.0133668129.

The spelling of 204350381 in words is "two hundred four million, three hundred fifty thousand, three hundred eighty-one".