Base | Representation |
---|---|
bin | 1111101010010… |
… | …00100000110000 |
3 | 100011012020101211 |
4 | 13311020200300 |
5 | 232112302013 |
6 | 21011405504 |
7 | 3153422011 |
oct | 765104060 |
9 | 304166354 |
10 | 131369008 |
11 | 68177531 |
12 | 37bb3894 |
13 | 212a7954 |
14 | 13639008 |
15 | b7ee23d |
hex | 7d48830 |
131369008 has 20 divisors (see below), whose sum is σ = 265594608. Its totient is φ = 62828480.
The previous prime is 131368969. The next prime is 131369009. The reversal of 131369008 is 800963131.
It is not an unprimeable number, because it can be changed into a prime (131369009) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178123 + ... + 178858.
Almost surely, 2131369008 is an apocalyptic number.
131369008 is the 6127-th centered heptagonal number.
It is an amenable number.
131369008 is an abundant number, since it is smaller than the sum of its proper divisors (134225600).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
131369008 is a wasteful number, since it uses less digits than its factorization.
131369008 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 357012 (or 357006 counting only the distinct ones).
The product of its (nonzero) digits is 3888, while the sum is 31.
The square root of 131369008 is about 11461.6319954883. The cubic root of 131369008 is about 508.3517311147.
The spelling of 131369008 in words is "one hundred thirty-one million, three hundred sixty-nine thousand, eight".
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