Base | Representation |
---|---|
bin | 1001101000111… |
… | …11001100100011 |
3 | 12122011112012222 |
4 | 10310133030203 |
5 | 131200240011 |
6 | 12005141255 |
7 | 2001240101 |
oct | 464371443 |
9 | 178145188 |
10 | 80868131 |
11 | 41714473 |
12 | 230ba82b |
13 | 139a5586 |
14 | aa50c71 |
15 | 7175ddb |
hex | 4d1f323 |
80868131 has 2 divisors, whose sum is σ = 80868132. Its totient is φ = 80868130.
The previous prime is 80868103. The next prime is 80868143. The reversal of 80868131 is 13186808.
It is a happy number.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 80868131 - 210 = 80867107 is a prime.
It is a super-2 number, since 2×808681312 = 13079309222866322, which contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 80868091 and 80868100.
It is not a weakly prime, because it can be changed into another prime (80868101) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40434065 + 40434066.
It is an arithmetic number, because the mean of its divisors is an integer number (40434066).
Almost surely, 280868131 is an apocalyptic number.
80868131 is a deficient number, since it is larger than the sum of its proper divisors (1).
80868131 is an equidigital number, since it uses as much as digits as its factorization.
80868131 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 9216, while the sum is 35.
The square root of 80868131 is about 8992.6709602876. The cubic root of 80868131 is about 432.4399435471.
The spelling of 80868131 in words is "eighty million, eight hundred sixty-eight thousand, one hundred thirty-one".
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