216264043 has 2 divisors, whose sum is σ = 216264044. Its totient is φ = 216264042.

The previous prime is 216264031. The next prime is 216264073. The reversal of 216264043 is 340462612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216264043 - 2¹⁷ = 216132971 is a prime.

It is equal to p_11928223 and since 216264043 and 11928223 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (216264073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108132021 + 108132022.

It is an arithmetic number, because the mean of its divisors is an integer number (108132022).

Almost surely, 2^216264043 is an apocalyptic number.

216264043 is a deficient number, since it is larger than the sum of its proper divisors (1).

216264043 is an equidigital number, since it uses as much as digits as its factorization.

216264043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 216264043 is about 14705.9186384258. The cubic root of 216264043 is about 600.2443847059.

The spelling of 216264043 in words is "two hundred sixteen million, two hundred sixty-four thousand, forty-three".