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206203141 = 1951105691
BaseRepresentation
bin11000100101001…
…10100100000101
3112101000012112101
430102212210011
5410242000031
632243352101
75052461224
oct1422464405
9471005471
10206203141
11a643a521
1259082631
13339498c1
141d558cbb
1513182361
hexc4a6905

206203141 has 4 divisors (see below), whose sum is σ = 206310784. Its totient is φ = 206095500.

The previous prime is 206203133. The next prime is 206203157. The reversal of 206203141 is 141302602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 206203141 - 23 = 206203133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206203541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50895 + ... + 54796.

It is an arithmetic number, because the mean of its divisors is an integer number (51577696).

Almost surely, 2206203141 is an apocalyptic number.

It is an amenable number.

206203141 is a deficient number, since it is larger than the sum of its proper divisors (107643).

206203141 is a wasteful number, since it uses less digits than its factorization.

206203141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107642.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 206203141 is about 14359.7751026957. The cubic root of 206203141 is about 590.7881270565.

Adding to 206203141 its reverse (141302602), we get a palindrome (347505743).

The spelling of 206203141 in words is "two hundred six million, two hundred three thousand, one hundred forty-one".

Divisors: 1 1951 105691 206203141