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201020343 = 3421159161
BaseRepresentation
bin10111111101101…
…01001110110111
3112000020220001220
423332311032313
5402430122333
631540321423
74660434066
oct1376651667
9460226056
10201020343
11a351a617
12573a3273
1332853864
141c9aa1dd
15129ab8b3
hexbfb53b7

201020343 has 8 divisors (see below), whose sum is σ = 268665456. Its totient is φ = 133694400.

The previous prime is 201020341. The next prime is 201020353. The reversal of 201020343 is 343020102.

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

It is not a de Polignac number, because 201020343 - 21 = 201020341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201020341) 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, 78318 + ... + 80843.

It is an arithmetic number, because the mean of its divisors is an integer number (33583182).

Almost surely, 2201020343 is an apocalyptic number.

201020343 is a deficient number, since it is larger than the sum of its proper divisors (67645113).

201020343 is a wasteful number, since it uses less digits than its factorization.

201020343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159585.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 201020343 is about 14178.1643028990. The cubic root of 201020343 is about 585.7963615443.

Adding to 201020343 its reverse (343020102), we get a palindrome (544040445).

The spelling of 201020343 in words is "two hundred one million, twenty thousand, three hundred forty-three".

Divisors: 1 3 421 1263 159161 477483 67006781 201020343