204011110309 has 2 divisors, whose sum is σ = 204011110310. Its totient is φ = 204011110308.

The previous prime is 204011110307. The next prime is 204011110339. The reversal of 204011110309 is 903011110402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196384581409 + 7626528900 = 443153^2 + 87330^2 .

It is a cyclic number.

It is not a de Polignac number, because 204011110309 - 2¹ = 204011110307 is a prime.

It is a super-3 number, since 3×204011110309³ (a number of 35 digits) contains 333 as substring.

Together with 204011110307, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 204011110309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204011110307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102005555154 + 102005555155.

It is an arithmetic number, because the mean of its divisors is an integer number (102005555155).

Almost surely, 2^204011110309 is an apocalyptic number.

It is an amenable number.

204011110309 is a deficient number, since it is larger than the sum of its proper divisors (1).

204011110309 is an equidigital number, since it uses as much as digits as its factorization.

204011110309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

The spelling of 204011110309 in words is "two hundred four billion, eleven million, one hundred ten thousand, three hundred nine".