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216373 is a prime number
BaseRepresentation
bin110100110100110101
3101222210211
4310310311
523410443
64345421
71560553
oct646465
9358724
10216373
11138623
12a5271
1377641
1458bd3
154419d
hex34d35

216373 has 2 divisors, whose sum is σ = 216374. Its totient is φ = 216372.

The previous prime is 216371. The next prime is 216379. The reversal of 216373 is 373612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128164 + 88209 = 358^2 + 297^2 .

It is a cyclic number.

It is not a de Polignac number, because 216373 - 21 = 216371 is a prime.

Together with 216371, it forms a pair of twin primes.

It is a nialpdrome in base 13.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108186 + 108187.

It is an arithmetic number, because the mean of its divisors is an integer number (108187).

2216373 is an apocalyptic number.

It is an amenable number.

216373 is a deficient number, since it is larger than the sum of its proper divisors (1).

216373 is an equidigital number, since it uses as much as digits as its factorization.

216373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 756, while the sum is 22.

The square root of 216373 is about 465.1591125626. The cubic root of 216373 is about 60.0345171760.

Adding to 216373 its reverse (373612), we get a palindrome (589985).

The spelling of 216373 in words is "two hundred sixteen thousand, three hundred seventy-three".