228145203 has 24 divisors (see below), whose sum is σ = 387157680. Its totient is φ = 127632960.

The previous prime is 228145193. The next prime is 228145259. The reversal of 228145203 is 302541822.

228145203 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 228145203 - 2⁴ = 228145187 is a prime.

It is a super-3 number, since 3×228145203³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (228145403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87348 + ... + 89921.

It is an arithmetic number, because the mean of its divisors is an integer number (16131570).

Almost surely, 2^228145203 is an apocalyptic number.

228145203 is a deficient number, since it is larger than the sum of its proper divisors (159012477).

228145203 is a wasteful number, since it uses less digits than its factorization.

228145203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177299 (or 177296 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 228145203 is about 15104.4762570570. The cubic root of 228145203 is about 611.0411343039.

The spelling of 228145203 in words is "two hundred twenty-eight million, one hundred forty-five thousand, two hundred three".