204036112309 has 2 divisors, whose sum is σ = 204036112310. Its totient is φ = 204036112308.

The previous prime is 204036112249. The next prime is 204036112333. The reversal of 204036112309 is 903211630402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153330980625 + 50705131684 = 391575^2 + 225178^2 .

It is a cyclic number.

It is not a de Polignac number, because 204036112309 - 2¹³ = 204036104117 is a prime.

It is a super-2 number, since 2×204036112309² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204036412309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102018056154 + 102018056155.

It is an arithmetic number, because the mean of its divisors is an integer number (102018056155).

Almost surely, 2^204036112309 is an apocalyptic number.

It is an amenable number.

204036112309 is a deficient number, since it is larger than the sum of its proper divisors (1).

204036112309 is an equidigital number, since it uses as much as digits as its factorization.

204036112309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 31.

The spelling of 204036112309 in words is "two hundred four billion, thirty-six million, one hundred twelve thousand, three hundred nine".