228143201 has 12 divisors (see below), whose sum is σ = 270060756. Its totient is φ = 191447520.

The previous prime is 228143191. The next prime is 228143207. The reversal of 228143201 is 102341822.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 107143201 + 121000000 = 10351^2 + 11000^2 .

It is not a de Polignac number, because 228143201 - 2¹⁴ = 228126817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (228143207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70946 + ... + 74091.

It is an arithmetic number, because the mean of its divisors is an integer number (22505063).

Almost surely, 2^228143201 is an apocalyptic number.

It is an amenable number.

228143201 is a deficient number, since it is larger than the sum of its proper divisors (41917555).

228143201 is a wasteful number, since it uses less digits than its factorization.

228143201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145072 (or 145061 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 228143201 is about 15104.4099851666. The cubic root of 228143201 is about 611.0393469803.

The spelling of 228143201 in words is "two hundred twenty-eight million, one hundred forty-three thousand, two hundred one".