216411353 has 2 divisors, whose sum is σ = 216411354. Its totient is φ = 216411352.

The previous prime is 216411331. The next prime is 216411397. The reversal of 216411353 is 353114612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 215150224 + 1261129 = 14668^2 + 1123^2 .

It is a cyclic number.

It is not a de Polignac number, because 216411353 - 2¹⁰ = 216410329 is a prime.

It is not a weakly prime, because it can be changed into another prime (216411313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108205676 + 108205677.

It is an arithmetic number, because the mean of its divisors is an integer number (108205677).

Almost surely, 2^216411353 is an apocalyptic number.

It is an amenable number.

216411353 is a deficient number, since it is larger than the sum of its proper divisors (1).

216411353 is an equidigital number, since it uses as much as digits as its factorization.

216411353 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 26.

The square root of 216411353 is about 14710.9263134583. The cubic root of 216411353 is about 600.3806408772.

Adding to 216411353 its reverse (353114612), we get a palindrome (569525965).

The spelling of 216411353 in words is "two hundred sixteen million, four hundred eleven thousand, three hundred fifty-three".