228012173 has 2 divisors, whose sum is σ = 228012174. Its totient is φ = 228012172.

The previous prime is 228012163. The next prime is 228012203. The reversal of 228012173 is 371210822.

228012173 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 221473924 + 6538249 = 14882^2 + 2557^2 .

It is a cyclic number.

It is not a de Polignac number, because 228012173 - 2⁴ = 228012157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228012163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114006086 + 114006087.

It is an arithmetic number, because the mean of its divisors is an integer number (114006087).

Almost surely, 2^228012173 is an apocalyptic number.

It is an amenable number.

228012173 is a deficient number, since it is larger than the sum of its proper divisors (1).

228012173 is an equidigital number, since it uses as much as digits as its factorization.

228012173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 228012173 is about 15100.0719534710. The cubic root of 228012173 is about 610.9223464948.

Adding to 228012173 its reverse (371210822), we get a palindrome (599222995).

The spelling of 228012173 in words is "two hundred twenty-eight million, twelve thousand, one hundred seventy-three".