216233807 has 2 divisors, whose sum is σ = 216233808. Its totient is φ = 216233806.

The previous prime is 216233803. The next prime is 216233861. The reversal of 216233807 is 708332612.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216233807 - 2² = 216233803 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216233803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108116903 + 108116904.

It is an arithmetic number, because the mean of its divisors is an integer number (108116904).

Almost surely, 2^216233807 is an apocalyptic number.

216233807 is a deficient number, since it is larger than the sum of its proper divisors (1).

216233807 is an equidigital number, since it uses as much as digits as its factorization.

216233807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 216233807 is about 14704.8905810278. The cubic root of 216233807 is about 600.2164098982.

The spelling of 216233807 in words is "two hundred sixteen million, two hundred thirty-three thousand, eight hundred seven".