204123015203 has 2 divisors, whose sum is σ = 204123015204. Its totient is φ = 204123015202.

The previous prime is 204123015199. The next prime is 204123015211. The reversal of 204123015203 is 302510321402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204123015203 - 2² = 204123015199 is a prime.

It is not a weakly prime, because it can be changed into another prime (204123015263) 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, 102061507601 + 102061507602.

It is an arithmetic number, because the mean of its divisors is an integer number (102061507602).

Almost surely, 2^204123015203 is an apocalyptic number.

204123015203 is a deficient number, since it is larger than the sum of its proper divisors (1).

204123015203 is an equidigital number, since it uses as much as digits as its factorization.

204123015203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 204123015203 its reverse (302510321402), we get a palindrome (506633336605).

The spelling of 204123015203 in words is "two hundred four billion, one hundred twenty-three million, fifteen thousand, two hundred three".