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201287 is a prime number
BaseRepresentation
bin110001001001000111
3101020010002
4301021013
522420122
64151515
71465562
oct611107
9336102
10201287
11128259
129859b
1370808
14534d9
153e992
hex31247

201287 has 2 divisors, whose sum is σ = 201288. Its totient is φ = 201286.

The previous prime is 201281. The next prime is 201307. The reversal of 201287 is 782102.

It is an a-pointer prime, because the next prime (201307) can be obtained adding 201287 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201287 - 28 = 201031 is a prime.

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 201287.

It is not a weakly prime, because it can be changed into another prime (201281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100643 + 100644.

It is an arithmetic number, because the mean of its divisors is an integer number (100644).

2201287 is an apocalyptic number.

201287 is a deficient number, since it is larger than the sum of its proper divisors (1).

201287 is an equidigital number, since it uses as much as digits as its factorization.

201287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 201287 is about 448.6501978156. The cubic root of 201287 is about 58.6055270135.

Adding to 201287 its reverse (782102), we get a palindrome (983389).

The spelling of 201287 in words is "two hundred one thousand, two hundred eighty-seven".