228017113 has 4 divisors (see below), whose sum is σ = 233578548. Its totient is φ = 222455680.

The previous prime is 228017099. The next prime is 228017117. The reversal of 228017113 is 311710822.

It is a happy number.

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 5798464 + 222218649 = 2408^2 + 14907^2 .

It is a cyclic number.

It is not a de Polignac number, because 228017113 - 2⁹ = 228016601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228017117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2780656 + ... + 2780737.

It is an arithmetic number, because the mean of its divisors is an integer number (58394637).

Almost surely, 2^228017113 is an apocalyptic number.

It is an amenable number.

228017113 is a deficient number, since it is larger than the sum of its proper divisors (5561435).

228017113 is an equidigital number, since it uses as much as digits as its factorization.

228017113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5561434.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 228017113 is about 15100.2355279645. The cubic root of 228017113 is about 610.9267584443.

Adding to 228017113 its reverse (311710822), we get a palindrome (539727935).

The spelling of 228017113 in words is "two hundred twenty-eight million, seventeen thousand, one hundred thirteen".