Base | Representation |
---|---|
bin | 1111101010111… |
… | …01100010010101 |
3 | 100011100121112100 |
4 | 13311131202111 |
5 | 232123031000 |
6 | 21013312313 |
7 | 3154231044 |
oct | 765354225 |
9 | 304317470 |
10 | 131455125 |
11 | 682261aa |
12 | 38035699 |
13 | 21307bc9 |
14 | 1365c55b |
15 | b819a00 |
hex | 7d5d895 |
131455125 has 24 divisors (see below), whose sum is σ = 236971800. Its totient is φ = 70108800.
The previous prime is 131455123. The next prime is 131455133. The reversal of 131455125 is 521554131.
131455125 is a `hidden beast` number, since 1 + 3 + 145 + 512 + 5 = 666.
It can be written as a sum of positive squares in 4 ways, for example, as 54756 + 131400369 = 234^2 + 11463^2 .
It is not a de Polignac number, because 131455125 - 21 = 131455123 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (131455123) 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, 57300 + ... + 59549.
It is an arithmetic number, because the mean of its divisors is an integer number (9873825).
Almost surely, 2131455125 is an apocalyptic number.
131455125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
131455125 is a deficient number, since it is larger than the sum of its proper divisors (105516675).
131455125 is a wasteful number, since it uses less digits than its factorization.
131455125 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 116870 (or 116857 counting only the distinct ones).
The product of its digits is 3000, while the sum is 27.
The square root of 131455125 is about 11465.3881312409. The cubic root of 131455125 is about 508.4627876575.
The spelling of 131455125 in words is "one hundred thirty-one million, four hundred fifty-five thousand, one hundred twenty-five".
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