228145403 has 2 divisors, whose sum is σ = 228145404. Its totient is φ = 228145402.

The previous prime is 228145381. The next prime is 228145409. The reversal of 228145403 is 304541822.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 228145403 - 2⁶ = 228145339 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (228145409) 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, 114072701 + 114072702.

It is an arithmetic number, because the mean of its divisors is an integer number (114072702).

Almost surely, 2^228145403 is an apocalyptic number.

228145403 is a deficient number, since it is larger than the sum of its proper divisors (1).

228145403 is an equidigital number, since it uses as much as digits as its factorization.

228145403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 228145403 is about 15104.4828776095. The cubic root of 228145403 is about 611.0413128572.

The spelling of 228145403 in words is "two hundred twenty-eight million, one hundred forty-five thousand, four hundred three".