228814291 has 2 divisors, whose sum is σ = 228814292. Its totient is φ = 228814290.

The previous prime is 228814277. The next prime is 228814301. The reversal of 228814291 is 192418822.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 228814291 - 2⁵ = 228814259 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 228814291.

It is not a weakly prime, because it can be changed into another prime (228814231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114407145 + 114407146.

It is an arithmetic number, because the mean of its divisors is an integer number (114407146).

Almost surely, 2^228814291 is an apocalyptic number.

228814291 is a deficient number, since it is larger than the sum of its proper divisors (1).

228814291 is an equidigital number, since it uses as much as digits as its factorization.

228814291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18432, while the sum is 37.

The square root of 228814291 is about 15126.6087078367. The cubic root of 228814291 is about 611.6378906130.

It can be divided in two parts, 22881 and 4291, that added together give a palindrome (27172).

The spelling of 228814291 in words is "two hundred twenty-eight million, eight hundred fourteen thousand, two hundred ninety-one".