Base | Representation |
---|---|
bin | 110010001101… |
… | …001000001011 |
3 | 220202122110101 |
4 | 302031020023 |
5 | 11332122341 |
6 | 1150030231 |
7 | 216603115 |
oct | 62151013 |
9 | 26678411 |
10 | 13160971 |
11 | 747a03a |
12 | 44a8377 |
13 | 295a575 |
14 | 1a683b5 |
15 | 124e831 |
hex | c8d20b |
13160971 has 2 divisors, whose sum is σ = 13160972. Its totient is φ = 13160970.
The previous prime is 13160969. The next prime is 13160989. The reversal of 13160971 is 17906131.
It is a weak prime.
It is an emirp because it is prime and its reverse (17906131) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 13160971 - 21 = 13160969 is a prime.
It is a super-2 number, since 2×131609712 = 346422315325682, which contains 22 as substring.
Together with 13160969, it forms a pair of twin primes.
It is not a weakly prime, because it can be changed into another prime (13160911) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6580485 + 6580486.
It is an arithmetic number, because the mean of its divisors is an integer number (6580486).
Almost surely, 213160971 is an apocalyptic number.
13160971 is a deficient number, since it is larger than the sum of its proper divisors (1).
13160971 is an equidigital number, since it uses as much as digits as its factorization.
13160971 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 1134, while the sum is 28.
The square root of 13160971 is about 3627.8052593820. The cubic root of 13160971 is about 236.0999947318.
The spelling of 13160971 in words is "thirteen million, one hundred sixty thousand, nine hundred seventy-one".
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