216314671 has 2 divisors, whose sum is σ = 216314672. Its totient is φ = 216314670.

The previous prime is 216314669. The next prime is 216314689. The reversal of 216314671 is 176413612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216314671 - 2¹ = 216314669 is a prime.

Together with 216314669, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216314641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108157335 + 108157336.

It is an arithmetic number, because the mean of its divisors is an integer number (108157336).

Almost surely, 2^216314671 is an apocalyptic number.

216314671 is a deficient number, since it is larger than the sum of its proper divisors (1).

216314671 is an equidigital number, since it uses as much as digits as its factorization.

216314671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 31.

The square root of 216314671 is about 14707.6398854473. The cubic root of 216314671 is about 600.2912206650.

The spelling of 216314671 in words is "two hundred sixteen million, three hundred fourteen thousand, six hundred seventy-one".