204203345 has 16 divisors (see below), whose sum is σ = 251361792. Its totient is φ = 159169920.

The previous prime is 204203339. The next prime is 204203347. The reversal of 204203345 is 543302402.

204203345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 204203345 - 2⁶ = 204203281 is a prime.

It is a super-2 number, since 2×204203345² = 83398012218378050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 204203345.

It is not an unprimeable number, because it can be changed into a prime (204203347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111104 + ... + 112926.

It is an arithmetic number, because the mean of its divisors is an integer number (15710112).

Almost surely, 2^204203345 is an apocalyptic number.

It is an amenable number.

204203345 is a deficient number, since it is larger than the sum of its proper divisors (47158447).

204203345 is a wasteful number, since it uses less digits than its factorization.

204203345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2392.

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 204203345 is about 14289.9735829007. The cubic root of 204203345 is about 588.8720622079.

Adding to 204203345 its reverse (543302402), we get a palindrome (747505747).

The spelling of 204203345 in words is "two hundred four million, two hundred three thousand, three hundred forty-five".