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201232312 = 23109230771
BaseRepresentation
bin10111111111010…
…00111110111000
3112000122122211121
423333220332320
5403003413222
631545035024
74662306061
oct1377507670
9460578747
10201232312
11a36548a6
1257485a74
13328c9198
141ca23568
15129ee5c7
hexbfe8fb8

201232312 has 16 divisors (see below), whose sum is σ = 380773800. Its totient is φ = 99692640.

The previous prime is 201232309. The next prime is 201232357. The reversal of 201232312 is 213232102.

It is a super-3 number, since 3×2012323123 (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 114514 + ... + 116257.

Almost surely, 2201232312 is an apocalyptic number.

It is an amenable number.

201232312 is a deficient number, since it is larger than the sum of its proper divisors (179541488).

201232312 is a wasteful number, since it uses less digits than its factorization.

201232312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230886 (or 230882 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 201232312 is about 14185.6375253282. The cubic root of 201232312 is about 586.0021898834.

Adding to 201232312 its reverse (213232102), we get a palindrome (414464414).

The spelling of 201232312 in words is "two hundred one million, two hundred thirty-two thousand, three hundred twelve".

Divisors: 1 2 4 8 109 218 436 872 230771 461542 923084 1846168 25154039 50308078 100616156 201232312