Base | Representation |
---|---|
bin | 1001101000101… |
… | …01011011100011 |
3 | 12122002111100111 |
4 | 10310111123203 |
5 | 131143000011 |
6 | 12004232151 |
7 | 2001012346 |
oct | 464253343 |
9 | 178074314 |
10 | 80828131 |
11 | 4169740a |
12 | 2309b657 |
13 | 139902c7 |
14 | aa4045d |
15 | 7169121 |
hex | 4d156e3 |
80828131 has 2 divisors, whose sum is σ = 80828132. Its totient is φ = 80828130.
The previous prime is 80828119. The next prime is 80828161. The reversal of 80828131 is 13182808.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 80828131 - 29 = 80827619 is a prime.
It is a super-2 number, since 2×808281312 = 13066373521906322, which contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 80828093 and 80828102.
It is not a weakly prime, because it can be changed into another prime (80828101) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40414065 + 40414066.
It is an arithmetic number, because the mean of its divisors is an integer number (40414066).
Almost surely, 280828131 is an apocalyptic number.
80828131 is a deficient number, since it is larger than the sum of its proper divisors (1).
80828131 is an equidigital number, since it uses as much as digits as its factorization.
80828131 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 3072, while the sum is 31.
The square root of 80828131 is about 8990.4466518633. The cubic root of 80828131 is about 432.3686321818.
The spelling of 80828131 in words is "eighty million, eight hundred twenty-eight thousand, one hundred thirty-one".
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