Base | Representation |
---|---|
bin | 11011100011001… |
… | …01101010100101 |
3 | 121002212020220121 |
4 | 31301211222211 |
5 | 433130300031 |
6 | 34533201541 |
7 | 5504226043 |
oct | 1561455245 |
9 | 532766817 |
10 | 231103141 |
11 | 1094a7235 |
12 | 654902b1 |
13 | 38b57429 |
14 | 2299b393 |
15 | 15450011 |
hex | dc65aa5 |
231103141 has 4 divisors (see below), whose sum is σ = 232394400. Its totient is φ = 229811884.
The previous prime is 231103139. The next prime is 231103157. The reversal of 231103141 is 141301132.
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 231103141 - 21 = 231103139 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 (231103121) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 645361 + ... + 645718.
It is an arithmetic number, because the mean of its divisors is an integer number (58098600).
Almost surely, 2231103141 is an apocalyptic number.
It is an amenable number.
231103141 is a deficient number, since it is larger than the sum of its proper divisors (1291259).
231103141 is a wasteful number, since it uses less digits than its factorization.
231103141 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1291258.
The product of its (nonzero) digits is 72, while the sum is 16.
The square root of 231103141 is about 15202.0768646919. The cubic root of 231103141 is about 613.6705509795.
Adding to 231103141 its reverse (141301132), we get a palindrome (372404273).
The spelling of 231103141 in words is "two hundred thirty-one million, one hundred three thousand, one hundred forty-one".
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