216001343 has 2 divisors, whose sum is σ = 216001344. Its totient is φ = 216001342.

The previous prime is 216001339. The next prime is 216001361. The reversal of 216001343 is 343100612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216001343 - 2² = 216001339 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216001393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108000671 + 108000672.

It is an arithmetic number, because the mean of its divisors is an integer number (108000672).

Almost surely, 2^216001343 is an apocalyptic number.

216001343 is a deficient number, since it is larger than the sum of its proper divisors (1).

216001343 is an equidigital number, since it uses as much as digits as its factorization.

216001343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 216001343 is about 14696.9841464159. The cubic root of 216001343 is about 600.0012435159.

Adding to 216001343 its reverse (343100612), we get a palindrome (559101955).

The spelling of 216001343 in words is "two hundred sixteen million, one thousand, three hundred forty-three".