204340133 has 2 divisors, whose sum is σ = 204340134. Its totient is φ = 204340132.

The previous prime is 204340111. The next prime is 204340139. The reversal of 204340133 is 331043402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138697729 + 65642404 = 11777^2 + 8102^2 .

It is a cyclic number.

It is not a de Polignac number, because 204340133 - 2¹² = 204336037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204340139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102170066 + 102170067.

It is an arithmetic number, because the mean of its divisors is an integer number (102170067).

Almost surely, 2^204340133 is an apocalyptic number.

It is an amenable number.

204340133 is a deficient number, since it is larger than the sum of its proper divisors (1).

204340133 is an equidigital number, since it uses as much as digits as its factorization.

204340133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 204340133 is about 14294.7589346585. The cubic root of 204340133 is about 589.0035204731.

Adding to 204340133 its reverse (331043402), we get a palindrome (535383535).

The spelling of 204340133 in words is "two hundred four million, three hundred forty thousand, one hundred thirty-three".