216395323 has 2 divisors, whose sum is σ = 216395324. Its totient is φ = 216395322.

The previous prime is 216395297. The next prime is 216395341. The reversal of 216395323 is 323593612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 216395323 - 2⁹ = 216394811 is a prime.

It is not a weakly prime, because it can be changed into another prime (216395353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108197661 + 108197662.

It is an arithmetic number, because the mean of its divisors is an integer number (108197662).

Almost surely, 2^216395323 is an apocalyptic number.

216395323 is a deficient number, since it is larger than the sum of its proper divisors (1).

216395323 is an equidigital number, since it uses as much as digits as its factorization.

216395323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29160, while the sum is 34.

The square root of 216395323 is about 14710.3814702407. The cubic root of 216395323 is about 600.3658167330.

It can be divided in two parts, 21639 and 5323, that added together give a palindrome (26962).

The spelling of 216395323 in words is "two hundred sixteen million, three hundred ninety-five thousand, three hundred twenty-three".