Base | Representation |
---|---|
bin | 1111101000000… |
… | …10111111111000 |
3 | 100010122202211100 |
4 | 13310002333320 |
5 | 232024144110 |
6 | 21001331400 |
7 | 3151124625 |
oct | 764027770 |
9 | 303582740 |
10 | 131084280 |
11 | 67aa2618 |
12 | 37a96b60 |
13 | 21208182 |
14 | 135a334c |
15 | b794bc0 |
hex | 7d02ff8 |
131084280 has 96 divisors (see below), whose sum is σ = 451105200. Its totient is φ = 32898048.
The previous prime is 131084243. The next prime is 131084281. The reversal of 131084280 is 82480131.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (131084281) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4590 + ... + 16829.
Almost surely, 2131084280 is an apocalyptic number.
131084280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
131084280 is an abundant number, since it is smaller than the sum of its proper divisors (320020920).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
131084280 is a wasteful number, since it uses less digits than its factorization.
131084280 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 21453 (or 21446 counting only the distinct ones).
The product of its (nonzero) digits is 1536, while the sum is 27.
The square root of 131084280 is about 11449.2043391670. The cubic root of 131084280 is about 507.9841998103.
The spelling of 131084280 in words is "one hundred thirty-one million, eighty-four thousand, two hundred eighty".
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