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280207201 is a prime number
BaseRepresentation
bin10000101100111…
…001111101100001
3201112021000000111
4100230321331201
51033213112301
643445451321
76641502421
oct2054717541
9645230014
10280207201
111341958aa
1279a10b41
134608aaa1
1429300481
15198ee551
hex10b39f61

280207201 has 2 divisors, whose sum is σ = 280207202. Its totient is φ = 280207200.

The previous prime is 280207177. The next prime is 280207219. The reversal of 280207201 is 102702082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 168376576 + 111830625 = 12976^2 + 10575^2 .

It is a cyclic number.

It is not a de Polignac number, because 280207201 - 211 = 280205153 is a prime.

It is not a weakly prime, because it can be changed into another prime (280207241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140103600 + 140103601.

It is an arithmetic number, because the mean of its divisors is an integer number (140103601).

Almost surely, 2280207201 is an apocalyptic number.

It is an amenable number.

280207201 is a deficient number, since it is larger than the sum of its proper divisors (1).

280207201 is an equidigital number, since it uses as much as digits as its factorization.

280207201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 280207201 is about 16739.3906997835. The cubic root of 280207201 is about 654.3745956319.

Adding to 280207201 its reverse (102702082), we get a palindrome (382909283).

The spelling of 280207201 in words is "two hundred eighty million, two hundred seven thousand, two hundred one".