204303691 has 2 divisors, whose sum is σ = 204303692. Its totient is φ = 204303690.

The previous prime is 204303581. The next prime is 204303719. The reversal of 204303691 is 196303402.

It is an a-pointer prime, because the next prime (204303719) can be obtained adding 204303691 to its sum of digits (28).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204303691 - 2⁹ = 204303179 is a prime.

It is not a weakly prime, because it can be changed into another prime (204303791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102151845 + 102151846.

It is an arithmetic number, because the mean of its divisors is an integer number (102151846).

Almost surely, 2^204303691 is an apocalyptic number.

204303691 is a deficient number, since it is larger than the sum of its proper divisors (1).

204303691 is an equidigital number, since it uses as much as digits as its factorization.

204303691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 204303691 is about 14293.4842148442. The cubic root of 204303691 is about 588.9685041140.

The spelling of 204303691 in words is "two hundred four million, three hundred three thousand, six hundred ninety-one".