216104311 has 2 divisors, whose sum is σ = 216104312. Its totient is φ = 216104310.

The previous prime is 216104299. The next prime is 216104327. The reversal of 216104311 is 113401612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216104311 - 2²⁵ = 182549879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216104341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108052155 + 108052156.

It is an arithmetic number, because the mean of its divisors is an integer number (108052156).

Almost surely, 2^216104311 is an apocalyptic number.

216104311 is a deficient number, since it is larger than the sum of its proper divisors (1).

216104311 is an equidigital number, since it uses as much as digits as its factorization.

216104311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 216104311 is about 14700.4867606484. The cubic root of 216104311 is about 600.0965687159.

Adding to 216104311 its reverse (113401612), we get a palindrome (329505923).

It can be divided in two parts, 21610 and 4311, that added together give a square (25921 = 161²).

The spelling of 216104311 in words is "two hundred sixteen million, one hundred four thousand, three hundred eleven".