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206103141 = 32166913721
BaseRepresentation
bin11000100100011…
…10001001100101
3112100211010100200
430102032021211
5410230300031
632241301113
75051563536
oct1422161145
9470733320
10206103141
11a6381382
1259034799
133391322a
141d53068d
15131628e6
hexc48e265

206103141 has 12 divisors (see below), whose sum is σ = 297904620. Its totient is φ = 137309760.

The previous prime is 206103137. The next prime is 206103143. The reversal of 206103141 is 141301602.

It is a happy number.

206103141 is a `hidden beast` number, since 20 + 610 + 31 + 4 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 74909025 + 131194116 = 8655^2 + 11454^2 .

It is not a de Polignac number, because 206103141 - 22 = 206103137 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206103143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8161 + ... + 21881.

It is an arithmetic number, because the mean of its divisors is an integer number (24825385).

Almost surely, 2206103141 is an apocalyptic number.

It is an amenable number.

206103141 is a deficient number, since it is larger than the sum of its proper divisors (91801479).

206103141 is a wasteful number, since it uses less digits than its factorization.

206103141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15396 (or 15393 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 206103141 is about 14356.2927317605. The cubic root of 206103141 is about 590.6926090069.

Adding to 206103141 its reverse (141301602), we get a palindrome (347404743).

The spelling of 206103141 in words is "two hundred six million, one hundred three thousand, one hundred forty-one".

Divisors: 1 3 9 1669 5007 13721 15021 41163 123489 22900349 68701047 206103141