228719101 has 4 divisors (see below), whose sum is σ = 246312892. Its totient is φ = 211125312.

The previous prime is 228719083. The next prime is 228719123. The reversal of 228719101 is 101917822.

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 14243076 + 214476025 = 3774^2 + 14645^2 .

It is a cyclic number.

It is not a de Polignac number, because 228719101 - 2¹¹ = 228717053 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 (228719401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8796876 + ... + 8796901.

It is an arithmetic number, because the mean of its divisors is an integer number (61578223).

Almost surely, 2^228719101 is an apocalyptic number.

It is an amenable number.

228719101 is a deficient number, since it is larger than the sum of its proper divisors (17593791).

228719101 is a wasteful number, since it uses less digits than its factorization.

228719101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17593790.

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

The square root of 228719101 is about 15123.4619383262. The cubic root of 228719101 is about 611.5530621609.

The spelling of 228719101 in words is "two hundred twenty-eight million, seven hundred nineteen thousand, one hundred one".