216968303 has 2 divisors, whose sum is σ = 216968304. Its totient is φ = 216968302.

The previous prime is 216968299. The next prime is 216968317. The reversal of 216968303 is 303869612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216968303 - 2² = 216968299 is a prime.

It is a Chen prime.

It is equal to p_11964764 and since 216968303 and 11964764 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216968363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108484151 + 108484152.

It is an arithmetic number, because the mean of its divisors is an integer number (108484152).

Almost surely, 2^216968303 is an apocalyptic number.

216968303 is a deficient number, since it is larger than the sum of its proper divisors (1).

216968303 is an equidigital number, since it uses as much as digits as its factorization.

216968303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 216968303 is about 14729.8439570825. The cubic root of 216968303 is about 600.8952404285.

The spelling of 216968303 in words is "two hundred sixteen million, nine hundred sixty-eight thousand, three hundred three".