Base | Representation |
---|---|
bin | 1111101010111… |
… | …01100011111110 |
3 | 100011100121200020 |
4 | 13311131203332 |
5 | 232123031410 |
6 | 21013313010 |
7 | 3154231254 |
oct | 765354376 |
9 | 304317606 |
10 | 131455230 |
11 | 68226295 |
12 | 38035766 |
13 | 21307c7a |
14 | 1365c5d4 |
15 | b819a70 |
hex | 7d5d8fe |
131455230 has 32 divisors (see below), whose sum is σ = 315922464. Its totient is φ = 35006976.
The previous prime is 131455229. The next prime is 131455249. The reversal of 131455230 is 32554131.
It is a self number, because there is not a number n which added to its sum of digits gives 131455230.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23154 + ... + 28266.
It is an arithmetic number, because the mean of its divisors is an integer number (9872577).
Almost surely, 2131455230 is an apocalyptic number.
131455230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
131455230 is an abundant number, since it is smaller than the sum of its proper divisors (184467234).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
131455230 is a wasteful number, since it uses less digits than its factorization.
131455230 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5980.
The product of its (nonzero) digits is 1800, while the sum is 24.
The square root of 131455230 is about 11465.3927102389. The cubic root of 131455230 is about 508.4629230359.
The spelling of 131455230 in words is "one hundred thirty-one million, four hundred fifty-five thousand, two hundred thirty".
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