Base | Representation |
---|---|
bin | 1111101110001… |
… | …10111110011111 |
3 | 100012011112221222 |
4 | 13313012332133 |
5 | 232230341012 |
6 | 21030443555 |
7 | 3161010140 |
oct | 767067637 |
9 | 305145858 |
10 | 131887007 |
11 | 684a072a |
12 | 382035bb |
13 | 21429665 |
14 | 13731ac7 |
15 | b8a2972 |
hex | 7dc6f9f |
131887007 has 8 divisors (see below), whose sum is σ = 153283200. Its totient is φ = 111129624.
The previous prime is 131886971. The next prime is 131887033. The reversal of 131887007 is 700788131.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 131887007 - 26 = 131886943 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (131887907) 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, 159257 + ... + 160082.
It is an arithmetic number, because the mean of its divisors is an integer number (19160400).
Almost surely, 2131887007 is an apocalyptic number.
131887007 is a deficient number, since it is larger than the sum of its proper divisors (21396193).
131887007 is an equidigital number, since it uses as much as digits as its factorization.
131887007 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 319405.
The product of its (nonzero) digits is 9408, while the sum is 35.
The square root of 131887007 is about 11484.2068511500. The cubic root of 131887007 is about 509.0190126486.
The spelling of 131887007 in words is "one hundred thirty-one million, eight hundred eighty-seven thousand, seven".
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