228015317 has 2 divisors, whose sum is σ = 228015318. Its totient is φ = 228015316.

The previous prime is 228015289. The next prime is 228015329. The reversal of 228015317 is 713510822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 191158276 + 36857041 = 13826^2 + 6071^2 .

It is a cyclic number.

It is not a de Polignac number, because 228015317 - 2⁸ = 228015061 is a prime.

It is a super-2 number, since 2×228015317² = 103981969573220978, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 228015317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228015367) 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, 114007658 + 114007659.

It is an arithmetic number, because the mean of its divisors is an integer number (114007659).

Almost surely, 2^228015317 is an apocalyptic number.

It is an amenable number.

228015317 is a deficient number, since it is larger than the sum of its proper divisors (1).

228015317 is an equidigital number, since it uses as much as digits as its factorization.

228015317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 228015317 is about 15100.1760585763. The cubic root of 228015317 is about 610.9251544312.

The spelling of 228015317 in words is "two hundred twenty-eight million, fifteen thousand, three hundred seventeen".