228307201 has 4 divisors (see below), whose sum is σ = 232050004. Its totient is φ = 224564400.

The previous prime is 228307181. The next prime is 228307213. The reversal of 228307201 is 102703822.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48720400 + 179586801 = 6980^2 + 13401^2 .

It is a cyclic number.

It is not a de Polignac number, because 228307201 - 2⁷ = 228307073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228307231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1871310 + ... + 1871431.

It is an arithmetic number, because the mean of its divisors is an integer number (58012501).

Almost surely, 2^228307201 is an apocalyptic number.

It is an amenable number.

228307201 is a deficient number, since it is larger than the sum of its proper divisors (3742803).

228307201 is an equidigital number, since it uses as much as digits as its factorization.

228307201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3742802.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 228307201 is about 15109.8378879457. The cubic root of 228307201 is about 611.1857264620.

The spelling of 228307201 in words is "two hundred twenty-eight million, three hundred seven thousand, two hundred one".