228216713 has 2 divisors, whose sum is σ = 228216714. Its totient is φ = 228216712.

The previous prime is 228216707. The next prime is 228216757. The reversal of 228216713 is 317612822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 222248464 + 5968249 = 14908^2 + 2443^2 .

It is a cyclic number.

It is not a de Polignac number, because 228216713 - 2¹² = 228212617 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 228216713.

It is not a weakly prime, because it can be changed into another prime (228216013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114108356 + 114108357.

It is an arithmetic number, because the mean of its divisors is an integer number (114108357).

Almost surely, 2^228216713 is an apocalyptic number.

It is an amenable number.

228216713 is a deficient number, since it is larger than the sum of its proper divisors (1).

228216713 is an equidigital number, since it uses as much as digits as its factorization.

228216713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 32.

The square root of 228216713 is about 15106.8432506596. The cubic root of 228216713 is about 611.1049693622.

The spelling of 228216713 in words is "two hundred twenty-eight million, two hundred sixteen thousand, seven hundred thirteen".