Base | Representation |
---|---|
bin | 1001100010110… |
… | …10001001100111 |
3 | 12120122112002101 |
4 | 10301122021213 |
5 | 130443423111 |
6 | 11535552531 |
7 | 1661336041 |
oct | 461321147 |
9 | 176575071 |
10 | 80061031 |
11 | 41213046 |
12 | 2298b747 |
13 | 137820bb |
14 | a8c0a91 |
15 | 7066bc1 |
hex | 4c5a267 |
80061031 has 2 divisors, whose sum is σ = 80061032. Its totient is φ = 80061030.
The previous prime is 80061029. The next prime is 80061061. The reversal of 80061031 is 13016008.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 80061031 - 21 = 80061029 is a prime.
It is a super-2 number, since 2×800610312 = 12819537369565922, which contains 22 as substring.
Together with 80061029, it forms a pair of twin primes.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (80061011) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40030515 + 40030516.
It is an arithmetic number, because the mean of its divisors is an integer number (40030516).
Almost surely, 280061031 is an apocalyptic number.
80061031 is a deficient number, since it is larger than the sum of its proper divisors (1).
80061031 is an equidigital number, since it uses as much as digits as its factorization.
80061031 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 144, while the sum is 19.
The square root of 80061031 is about 8947.6829961728. The cubic root of 80061031 is about 430.9964829073.
Adding to 80061031 its reverse (13016008), we get a palindrome (93077039).
The spelling of 80061031 in words is "eighty million, sixty-one thousand, thirty-one".
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