Base | Representation |
---|---|
bin | 1111101001000… |
… | …00111111010100 |
3 | 100010220000100010 |
4 | 13310200333110 |
5 | 232042111444 |
6 | 21004120220 |
7 | 3152146026 |
oct | 764407724 |
9 | 303800303 |
10 | 131207124 |
11 | 68076944 |
12 | 37b36070 |
13 | 2124c069 |
14 | 135d6016 |
15 | b7bb2b9 |
hex | 7d20fd4 |
131207124 has 12 divisors (see below), whose sum is σ = 306149984. Its totient is φ = 43735704.
The previous prime is 131207123. The next prime is 131207137. The reversal of 131207124 is 421702131.
It is a tau number, because it is divible by the number of its divisors (12).
It is a self number, because there is not a number n which added to its sum of digits gives 131207124.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (131207123) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5466952 + ... + 5466975.
Almost surely, 2131207124 is an apocalyptic number.
It is an amenable number.
131207124 is an abundant number, since it is smaller than the sum of its proper divisors (174942860).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
131207124 is a wasteful number, since it uses less digits than its factorization.
131207124 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 10933934 (or 10933932 counting only the distinct ones).
The product of its (nonzero) digits is 336, while the sum is 21.
The square root of 131207124 is about 11454.5678224890. The cubic root of 131207124 is about 508.1428339548.
Adding to 131207124 its reverse (421702131), we get a palindrome (552909255).
The spelling of 131207124 in words is "one hundred thirty-one million, two hundred seven thousand, one hundred twenty-four".
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