228708313 has 2 divisors, whose sum is σ = 228708314. Its totient is φ = 228708312.

The previous prime is 228708287. The next prime is 228708317. The reversal of 228708313 is 313807822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 219869584 + 8838729 = 14828^2 + 2973^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228708313 is a prime.

It is not a weakly prime, because it can be changed into another prime (228708317) 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, 114354156 + 114354157.

It is an arithmetic number, because the mean of its divisors is an integer number (114354157).

Almost surely, 2^228708313 is an apocalyptic number.

It is an amenable number.

228708313 is a deficient number, since it is larger than the sum of its proper divisors (1).

228708313 is an equidigital number, since it uses as much as digits as its factorization.

228708313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 228708313 is about 15123.1052697520. The cubic root of 228708313 is about 611.5434469631.

The spelling of 228708313 in words is "two hundred twenty-eight million, seven hundred eight thousand, three hundred thirteen".