216012943 has 2 divisors, whose sum is σ = 216012944. Its totient is φ = 216012942.

The previous prime is 216012911. The next prime is 216012949. The reversal of 216012943 is 349210612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 216012943 - 2⁵ = 216012911 is a prime.

It is equal to p_11915074 and since 216012943 and 11915074 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 (216012949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108006471 + 108006472.

It is an arithmetic number, because the mean of its divisors is an integer number (108006472).

Almost surely, 2^216012943 is an apocalyptic number.

216012943 is a deficient number, since it is larger than the sum of its proper divisors (1).

216012943 is an equidigital number, since it uses as much as digits as its factorization.

216012943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 216012943 is about 14697.3787799049. The cubic root of 216012943 is about 600.0119840199.

The spelling of 216012943 in words is "two hundred sixteen million, twelve thousand, nine hundred forty-three".