216267313 has 2 divisors, whose sum is σ = 216267314. Its totient is φ = 216267312.

The previous prime is 216267287. The next prime is 216267397. The reversal of 216267313 is 313762612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 208715809 + 7551504 = 14447^2 + 2748^2 .

It is a cyclic number.

It is not a de Polignac number, because 216267313 - 2⁵ = 216267281 is a prime.

It is not a weakly prime, because it can be changed into another prime (216267113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108133656 + 108133657.

It is an arithmetic number, because the mean of its divisors is an integer number (108133657).

Almost surely, 2^216267313 is an apocalyptic number.

It is an amenable number.

216267313 is a deficient number, since it is larger than the sum of its proper divisors (1).

216267313 is an equidigital number, since it uses as much as digits as its factorization.

216267313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 31.

The square root of 216267313 is about 14706.0298177312. The cubic root of 216267313 is about 600.2474100035.

The spelling of 216267313 in words is "two hundred sixteen million, two hundred sixty-seven thousand, three hundred thirteen".