228171109 has 8 divisors (see below), whose sum is σ = 243899712. Its totient is φ = 212926560.

The previous prime is 228171107. The next prime is 228171143. The reversal of 228171109 is 901171822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 228171109 - 2¹ = 228171107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228171103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120039 + ... + 121924.

It is an arithmetic number, because the mean of its divisors is an integer number (30487464).

Almost surely, 2^228171109 is an apocalyptic number.

It is an amenable number.

228171109 is a deficient number, since it is larger than the sum of its proper divisors (15728603).

228171109 is a wasteful number, since it uses less digits than its factorization.

228171109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242027.

The product of its (nonzero) digits is 2016, while the sum is 31.

The square root of 228171109 is about 15105.3337930679. Note that the first 3 decimals coincide. The cubic root of 228171109 is about 611.0642614357.

The spelling of 228171109 in words is "two hundred twenty-eight million, one hundred seventy-one thousand, one hundred nine".