228347851 has 2 divisors, whose sum is σ = 228347852. Its totient is φ = 228347850.

The previous prime is 228347849. The next prime is 228347863. The reversal of 228347851 is 158743822.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 228347851 - 2¹ = 228347849 is a prime.

Together with 228347849, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (228347881) 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, 114173925 + 114173926.

It is an arithmetic number, because the mean of its divisors is an integer number (114173926).

Almost surely, 2^228347851 is an apocalyptic number.

228347851 is a deficient number, since it is larger than the sum of its proper divisors (1).

228347851 is an equidigital number, since it uses as much as digits as its factorization.

228347851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 107520, while the sum is 40.

The square root of 228347851 is about 15111.1829781788. The cubic root of 228347851 is about 611.2219980955.

The spelling of 228347851 in words is "two hundred twenty-eight million, three hundred forty-seven thousand, eight hundred fifty-one".