228423193 has 2 divisors, whose sum is σ = 228423194. Its totient is φ = 228423192.

The previous prime is 228423191. The next prime is 228423197. The reversal of 228423193 is 391324822.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120824064 + 107599129 = 10992^2 + 10373^2 .

It is a cyclic number.

It is not a de Polignac number, because 228423193 - 2¹ = 228423191 is a prime.

Together with 228423191, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (228423191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114211596 + 114211597.

It is an arithmetic number, because the mean of its divisors is an integer number (114211597).

Almost surely, 2^228423193 is an apocalyptic number.

It is an amenable number.

228423193 is a deficient number, since it is larger than the sum of its proper divisors (1).

228423193 is an equidigital number, since it uses as much as digits as its factorization.

228423193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 34.

The square root of 228423193 is about 15113.6756945490. The cubic root of 228423193 is about 611.2892137109.

The spelling of 228423193 in words is "two hundred twenty-eight million, four hundred twenty-three thousand, one hundred ninety-three".