228101791 has 8 divisors (see below), whose sum is σ = 236351520. Its totient is φ = 219877728.

The previous prime is 228101789. The next prime is 228101803. The reversal of 228101791 is 197101822.

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 228101791 - 2¹ = 228101789 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 (228101191) 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, 12685 + ... + 24841.

It is an arithmetic number, because the mean of its divisors is an integer number (29543940).

Almost surely, 2^228101791 is an apocalyptic number.

228101791 is a deficient number, since it is larger than the sum of its proper divisors (8249729).

228101791 is a wasteful number, since it uses less digits than its factorization.

228101791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12833.

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

The square root of 228101791 is about 15103.0391312477. The cubic root of 228101791 is about 611.0023750692.

Adding to 228101791 its sum of digits (31), we get a palindrome (228101822).

The spelling of 228101791 in words is "two hundred twenty-eight million, one hundred one thousand, seven hundred ninety-one".