216304463 has 2 divisors, whose sum is σ = 216304464. Its totient is φ = 216304462.

The previous prime is 216304457. The next prime is 216304483. The reversal of 216304463 is 364403612.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216304463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216304483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108152231 + 108152232.

It is an arithmetic number, because the mean of its divisors is an integer number (108152232).

Almost surely, 2^216304463 is an apocalyptic number.

216304463 is a deficient number, since it is larger than the sum of its proper divisors (1).

216304463 is an equidigital number, since it uses as much as digits as its factorization.

216304463 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 216304463 is about 14707.2928508274. The cubic root of 216304463 is about 600.2817778332.

The spelling of 216304463 in words is "two hundred sixteen million, three hundred four thousand, four hundred sixty-three".