> #include <stdio.h>
> #include <math.h>
> 
> int issushu(long int k)
> {
> 	int i=2;
> 	while ( (k%i!=0) && (i<1+sqrt(k)) ) i++;
> 	if (i>sqrt(k)) return 1;
> 	else return i;
> }
> 
> int shuzihe(long int k)
> {
> 	int sum=0;
> 	while (k>10) {
> 		sum+=k%10;
> 		k=k/10;
> 	}
> 	sum+=k;
> 	return sum;
> }
> 
> int not(long int n)
> {
> 	int sum1=0,yinzi,sum2=0;
> 	long int nn=n,mm=n;
> 	while (nn>9) {
> 		sum1+=nn%10;
> 		nn/=10;
> 	}
> 	sum1+=nn;
> 	yinzi=issushu(mm);
> 	if (yinzi==1) return 1;
> 	while (yinzi!=1) {
> 		sum2+=shuzihe(yinzi);
> 		mm=mm/yinzi;
> 		yinzi=issushu(mm);
> 	}
> 	sum2+=shuzihe(mm);
> 	if (sum1==sum2) return 0;
> 	else return 1;
> }
> 
> int main()
> {
> 	long int m,n;
> 	scanf("%ld",&m);
> 	n=m+1;
> 	while (not(n)) n++;
> 	printf("%ld",n);
> 	return 0;
> }