204371111 has 6 divisors (see below), whose sum is σ = 237737880. Its totient is φ = 175175196.

The previous prime is 204371081. The next prime is 204371113. The reversal of 204371111 is 111173402.

It is a happy number.

It is not a de Polignac number, because 204371111 - 2⁶ = 204371047 is a prime.

It is a super-2 number, since 2×204371111² = 83535102022748642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204371113) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2085371 + ... + 2085468.

It is an arithmetic number, because the mean of its divisors is an integer number (39622980).

Almost surely, 2^204371111 is an apocalyptic number.

204371111 is a deficient number, since it is larger than the sum of its proper divisors (33366769).

204371111 is an equidigital number, since it uses as much as digits as its factorization.

204371111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4170853 (or 4170846 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 204371111 is about 14295.8424375760. The cubic root of 204371111 is about 589.0332833148.

The spelling of 204371111 in words is "two hundred four million, three hundred seventy-one thousand, one hundred eleven".