228964321 has 2 divisors, whose sum is σ = 228964322. Its totient is φ = 228964320.

The previous prime is 228964303. The next prime is 228964339. The reversal of 228964321 is 123469822.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (228964303) and next prime (228964339).

It can be written as a sum of positive squares in only one way, i.e., 208398096 + 20566225 = 14436^2 + 4535^2 .

It is a cyclic number.

It is not a de Polignac number, because 228964321 - 2⁹ = 228963809 is a prime.

It is not a weakly prime, because it can be changed into another prime (228904321) 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, 114482160 + 114482161.

It is an arithmetic number, because the mean of its divisors is an integer number (114482161).

Almost surely, 2^228964321 is an apocalyptic number.

It is an amenable number.

228964321 is a deficient number, since it is larger than the sum of its proper divisors (1).

228964321 is an equidigital number, since it uses as much as digits as its factorization.

228964321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 37.

The square root of 228964321 is about 15131.5670371578. The cubic root of 228964321 is about 611.7715419153.

The spelling of 228964321 in words is "two hundred twenty-eight million, nine hundred sixty-four thousand, three hundred twenty-one".