204251304311 has 2 divisors, whose sum is σ = 204251304312. Its totient is φ = 204251304310.

The previous prime is 204251304259. The next prime is 204251304347. The reversal of 204251304311 is 113403152402.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204251304311 - 2³⁰ = 203177562487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204251304391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102125652155 + 102125652156.

It is an arithmetic number, because the mean of its divisors is an integer number (102125652156).

Almost surely, 2^204251304311 is an apocalyptic number.

204251304311 is a deficient number, since it is larger than the sum of its proper divisors (1).

204251304311 is an equidigital number, since it uses as much as digits as its factorization.

204251304311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 204251304311 its reverse (113403152402), we get a palindrome (317654456713).

The spelling of 204251304311 in words is "two hundred four billion, two hundred fifty-one million, three hundred four thousand, three hundred eleven".