228315697 has 2 divisors, whose sum is σ = 228315698. Its totient is φ = 228315696.

The previous prime is 228315683. The next prime is 228315721. The reversal of 228315697 is 796513822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153735201 + 74580496 = 12399^2 + 8636^2 .

It is a cyclic number.

It is not a de Polignac number, because 228315697 - 2¹⁹ = 227791409 is a prime.

It is not a weakly prime, because it can be changed into another prime (228315667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114157848 + 114157849.

It is an arithmetic number, because the mean of its divisors is an integer number (114157849).

Almost surely, 2^228315697 is an apocalyptic number.

It is an amenable number.

228315697 is a deficient number, since it is larger than the sum of its proper divisors (1).

228315697 is an equidigital number, since it uses as much as digits as its factorization.

228315697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 43.

The square root of 228315697 is about 15110.1190266655. The cubic root of 228315697 is about 611.1933077231.

The spelling of 228315697 in words is "two hundred twenty-eight million, three hundred fifteen thousand, six hundred ninety-seven".