Base | Representation |
---|---|
bin | 1111101001001… |
… | …01001000111111 |
3 | 100010220212122212 |
4 | 13310211020333 |
5 | 232043133002 |
6 | 21004331035 |
7 | 3152246426 |
oct | 764451077 |
9 | 303825585 |
10 | 131224127 |
11 | 680886a1 |
12 | 37b43a7b |
13 | 21256a18 |
14 | 135dc2bd |
15 | b7c1352 |
hex | 7d2523f |
131224127 has 8 divisors (see below), whose sum is σ = 138754560. Its totient is φ = 123756120.
The previous prime is 131224097. The next prime is 131224157. The reversal of 131224127 is 721422131.
It is an interprime number because it is at equal distance from previous prime (131224097) and next prime (131224157).
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 131224127 - 26 = 131224063 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 (131224157) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11249 + ... + 19722.
It is an arithmetic number, because the mean of its divisors is an integer number (17344320).
Almost surely, 2131224127 is an apocalyptic number.
131224127 is a deficient number, since it is larger than the sum of its proper divisors (7530433).
131224127 is a wasteful number, since it uses less digits than its factorization.
131224127 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 31213.
The product of its digits is 672, while the sum is 23.
The square root of 131224127 is about 11455.3099914407. The cubic root of 131224127 is about 508.1647829140.
Adding to 131224127 its reverse (721422131), we get a palindrome (852646258).
The spelling of 131224127 in words is "one hundred thirty-one million, two hundred twenty-four thousand, one hundred twenty-seven".
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