204103204117 has 2 divisors, whose sum is σ = 204103204118. Its totient is φ = 204103204116.

The previous prime is 204103204091. The next prime is 204103204141. The reversal of 204103204117 is 711402301402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125439222276 + 78663981841 = 354174^2 + 280471^2 .

It is a cyclic number.

It is not a de Polignac number, because 204103204117 - 2¹⁹ = 204102679829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 204103204091 and 204103204100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204103204817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102051602058 + 102051602059.

It is an arithmetic number, because the mean of its divisors is an integer number (102051602059).

Almost surely, 2^204103204117 is an apocalyptic number.

It is an amenable number.

204103204117 is a deficient number, since it is larger than the sum of its proper divisors (1).

204103204117 is an equidigital number, since it uses as much as digits as its factorization.

204103204117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 25.

Adding to 204103204117 its reverse (711402301402), we get a palindrome (915505505519).

The spelling of 204103204117 in words is "two hundred four billion, one hundred three million, two hundred four thousand, one hundred seventeen".