Base | Representation |
---|---|
bin | 101000100011010011… |
… | …0001000011100111011 |
3 | 22022210000102201020211 |
4 | 1101012212020130323 |
5 | 2411321414402011 |
6 | 104001122531551 |
7 | 6202005431413 |
oct | 1210646103473 |
9 | 268700381224 |
10 | 87083747131 |
11 | 33a28561157 |
12 | 14a64206bb7 |
13 | 829a8b0874 |
14 | 4301895643 |
15 | 23ea32bb21 |
hex | 144698873b |
87083747131 has 2 divisors, whose sum is σ = 87083747132. Its totient is φ = 87083747130.
The previous prime is 87083747117. The next prime is 87083747183. The reversal of 87083747131 is 13174738078.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 87083747131 - 211 = 87083745083 is a prime.
It is a super-2 number, since 2×870837471312 (a number of 23 digits) contains 22 as substring.
It is not a weakly prime, because it can be changed into another prime (87083744131) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43541873565 + 43541873566.
It is an arithmetic number, because the mean of its divisors is an integer number (43541873566).
Almost surely, 287083747131 is an apocalyptic number.
87083747131 is a deficient number, since it is larger than the sum of its proper divisors (1).
87083747131 is an equidigital number, since it uses as much as digits as its factorization.
87083747131 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 790272, while the sum is 49.
The spelling of 87083747131 in words is "eighty-seven billion, eighty-three million, seven hundred forty-seven thousand, one hundred thirty-one".
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