228850309 has 2 divisors, whose sum is σ = 228850310. Its totient is φ = 228850308.

The previous prime is 228850289. The next prime is 228850313. The reversal of 228850309 is 903058822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 164096100 + 64754209 = 12810^2 + 8047^2 .

It is a cyclic number.

It is not a de Polignac number, because 228850309 - 2¹¹ = 228848261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228820309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114425154 + 114425155.

It is an arithmetic number, because the mean of its divisors is an integer number (114425155).

Almost surely, 2^228850309 is an apocalyptic number.

It is an amenable number.

228850309 is a deficient number, since it is larger than the sum of its proper divisors (1).

228850309 is an equidigital number, since it uses as much as digits as its factorization.

228850309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 228850309 is about 15127.7992120467. The cubic root of 228850309 is about 611.6699818745.

The spelling of 228850309 in words is "two hundred twenty-eight million, eight hundred fifty thousand, three hundred nine".