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200521131 = 32272771063
BaseRepresentation
bin10111111001110…
…11010110101011
3111222022112021120
423330323112223
5402313134011
631521510323
74653254466
oct1374732653
9458275246
10200521131
11a3209548
12571a23a3
133270a575
141c8ba2dd
151290da06
hexbf3b5ab

200521131 has 16 divisors (see below), whose sum is σ = 269762304. Its totient is φ = 132486624.

The previous prime is 200521081. The next prime is 200521141. The reversal of 200521131 is 131125002.

It is not a de Polignac number, because 200521131 - 26 = 200521067 is a prime.

It is a super-2 number, since 2×2005211312 = 80417447955038322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 200521131.

It is not an unprimeable number, because it can be changed into a prime (200521141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188106 + ... + 189168.

It is an arithmetic number, because the mean of its divisors is an integer number (16860144).

Almost surely, 2200521131 is an apocalyptic number.

200521131 is a deficient number, since it is larger than the sum of its proper divisors (69241173).

200521131 is a wasteful number, since it uses less digits than its factorization.

200521131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1570.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 200521131 is about 14160.5484003975. The cubic root of 200521131 is about 585.3110392108.

Adding to 200521131 its reverse (131125002), we get a palindrome (331646133).

The spelling of 200521131 in words is "two hundred million, five hundred twenty-one thousand, one hundred thirty-one".

Divisors: 1 3 227 277 681 831 1063 3189 62879 188637 241301 294451 723903 883353 66840377 200521131