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218341201 = 1352132237
BaseRepresentation
bin11010000001110…
…01111101010001
3120012211212211011
431000321331101
5421343404301
633355450521
75260604161
oct1500717521
9505755734
10218341201
1110227aa81
1261156a41
13363096a0
1420dd85a1
151427da51
hexd039f51

218341201 has 8 divisors (see below), whose sum is σ = 235595304. Its totient is φ = 201152640.

The previous prime is 218341187. The next prime is 218341243. The reversal of 218341201 is 102143812.

It is a happy number.

218341201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 33408400 + 184932801 = 5780^2 + 13599^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 218341201 - 25 = 218341169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (219341201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9346 + ... + 22891.

It is an arithmetic number, because the mean of its divisors is an integer number (29449413).

Almost surely, 2218341201 is an apocalyptic number.

It is an amenable number.

218341201 is a deficient number, since it is larger than the sum of its proper divisors (17254103).

218341201 is a wasteful number, since it uses less digits than its factorization.

218341201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32771.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 218341201 is about 14776.3730664869. The cubic root of 218341201 is about 602.1599934200.

The spelling of 218341201 in words is "two hundred eighteen million, three hundred forty-one thousand, two hundred one".

Divisors: 1 13 521 6773 32237 419081 16795477 218341201