204240310507 has 2 divisors, whose sum is σ = 204240310508. Its totient is φ = 204240310506.

The previous prime is 204240310451. The next prime is 204240310531. The reversal of 204240310507 is 705013042402.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204240310507 is a prime.

It is not a weakly prime, because it can be changed into another prime (204240310537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102120155253 + 102120155254.

It is an arithmetic number, because the mean of its divisors is an integer number (102120155254).

Almost surely, 2^204240310507 is an apocalyptic number.

204240310507 is a deficient number, since it is larger than the sum of its proper divisors (1).

204240310507 is an equidigital number, since it uses as much as digits as its factorization.

204240310507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 28.

Adding to 204240310507 its reverse (705013042402), we get a palindrome (909253352909).

The spelling of 204240310507 in words is "two hundred four billion, two hundred forty million, three hundred ten thousand, five hundred seven".