Base | Representation |
---|---|
bin | 10000110000001… |
… | …111000101000011 |
3 | 201120220100110020 |
4 | 100300033011003 |
5 | 1033424031011 |
6 | 43520304523 |
7 | 6652066413 |
oct | 2060170503 |
9 | 646810406 |
10 | 281080131 |
11 | 134731732 |
12 | 7a172143 |
13 | 46305207 |
14 | 2948a643 |
15 | 19a23006 |
hex | 10c0f143 |
281080131 has 16 divisors (see below), whose sum is σ = 393212928. Its totient is φ = 178365600.
The previous prime is 281080117. The next prime is 281080141. The reversal of 281080131 is 131080182.
It is not a de Polignac number, because 281080131 - 222 = 276885827 is a prime.
It is a super-2 number, since 2×2810801312 = 158012080085954322, which contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (281080141) 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 15 ways as a sum of consecutive naturals, for example, 19101 + ... + 30446.
It is an arithmetic number, because the mean of its divisors is an integer number (24575808).
Almost surely, 2281080131 is an apocalyptic number.
281080131 is a deficient number, since it is larger than the sum of its proper divisors (112132797).
281080131 is a wasteful number, since it uses less digits than its factorization.
281080131 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 49642.
The product of its (nonzero) digits is 384, while the sum is 24.
The square root of 281080131 is about 16765.4445512190. Note that the first 3 decimals coincide. The cubic root of 281080131 is about 655.0534159961.
The spelling of 281080131 in words is "two hundred eighty-one million, eighty thousand, one hundred thirty-one".
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