228135011 has 8 divisors (see below), whose sum is σ = 245823984. Its totient is φ = 210466080.

The previous prime is 228134981. The next prime is 228135023. The reversal of 228135011 is 110531822.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228135011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228135911) 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, 25601 + ... + 33341.

It is an arithmetic number, because the mean of its divisors is an integer number (30727998).

Almost surely, 2^228135011 is an apocalyptic number.

228135011 is a deficient number, since it is larger than the sum of its proper divisors (17688973).

228135011 is a wasteful number, since it uses less digits than its factorization.

228135011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10021.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 228135011 is about 15104.1388698595. The cubic root of 228135011 is about 611.0320350930.

Adding to 228135011 its reverse (110531822), we get a palindrome (338666833).

The spelling of 228135011 in words is "two hundred twenty-eight million, one hundred thirty-five thousand, eleven".