204431930 has 16 divisors (see below), whose sum is σ = 369350280. Its totient is φ = 81467712.

The previous prime is 204431921. The next prime is 204431939. The reversal of 204431930 is 39134402.

204431930 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (204431921) and next prime (204431939).

It can be written as a sum of positive squares in 4 ways, for example, as 107350321 + 97081609 = 10361^2 + 9853^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 204431930.

It is not an unprimeable number, because it can be changed into a prime (204431939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35309 + ... + 40688.

Almost surely, 2^204431930 is an apocalyptic number.

204431930 is a deficient number, since it is larger than the sum of its proper divisors (164918350).

204431930 is a wasteful number, since it uses less digits than its factorization.

204431930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76273.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 204431930 is about 14297.9694362521. The cubic root of 204431930 is about 589.0917078510.

The spelling of 204431930 in words is "two hundred four million, four hundred thirty-one thousand, nine hundred thirty".