Base | Representation |
---|---|
bin | 1111101010001… |
… | …00001000011111 |
3 | 100011011022210111 |
4 | 13311010020133 |
5 | 232111213241 |
6 | 21011150451 |
7 | 3153315505 |
oct | 765041037 |
9 | 304138714 |
10 | 131351071 |
11 | 68165005 |
12 | 37ba5427 |
13 | 2129c737 |
14 | 13632675 |
15 | b7e8c81 |
hex | 7d4421f |
131351071 has 2 divisors, whose sum is σ = 131351072. Its totient is φ = 131351070.
The previous prime is 131350987. The next prime is 131351083. The reversal of 131351071 is 170153131.
It is a strong prime.
It is an emirp because it is prime and its reverse (170153131) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 131351071 - 213 = 131342879 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (131352071) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65675535 + 65675536.
It is an arithmetic number, because the mean of its divisors is an integer number (65675536).
Almost surely, 2131351071 is an apocalyptic number.
131351071 is a deficient number, since it is larger than the sum of its proper divisors (1).
131351071 is an equidigital number, since it uses as much as digits as its factorization.
131351071 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 315, while the sum is 22.
The square root of 131351071 is about 11460.8494885850. The cubic root of 131351071 is about 508.3285934402.
The spelling of 131351071 in words is "one hundred thirty-one million, three hundred fifty-one thousand, seventy-one".
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