204240319 has 2 divisors, whose sum is σ = 204240320. Its totient is φ = 204240318.

The previous prime is 204240317. The next prime is 204240353. The reversal of 204240319 is 913042402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204240319 - 2¹ = 204240317 is a prime.

It is a super-2 number, since 2×204240319² = 83428215810443522, which contains 22 as substring.

Together with 204240317, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 204240293 and 204240302.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204240317) 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, 102120159 + 102120160.

It is an arithmetic number, because the mean of its divisors is an integer number (102120160).

Almost surely, 2^204240319 is an apocalyptic number.

204240319 is a deficient number, since it is larger than the sum of its proper divisors (1).

204240319 is an equidigital number, since it uses as much as digits as its factorization.

204240319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 204240319 is about 14291.2672286260. The cubic root of 204240319 is about 588.9076013607.

The spelling of 204240319 in words is "two hundred four million, two hundred forty thousand, three hundred nineteen".