Base | Representation |
---|---|
bin | 110001010100… |
… | …111111001001 |
3 | 220022222000120 |
4 | 301110333021 |
5 | 11302243032 |
6 | 1141053453 |
7 | 214624521 |
oct | 61247711 |
9 | 26288016 |
10 | 12931017 |
11 | 73322a0 |
12 | 43b7289 |
13 | 28a99b8 |
14 | 1a08681 |
15 | 120662c |
hex | c54fc9 |
12931017 has 16 divisors (see below), whose sum is σ = 19077120. Its totient is φ = 7725200.
The previous prime is 12931007. The next prime is 12931043. The reversal of 12931017 is 71013921.
It is a cyclic number.
It is not a de Polignac number, because 12931017 - 27 = 12930889 is a prime.
It is a super-2 number, since 2×129310172 = 334422401308578, which contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (12931007) 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 in 15 ways as a sum of consecutive naturals, for example, 417 + ... + 5102.
It is an arithmetic number, because the mean of its divisors is an integer number (1192320).
Almost surely, 212931017 is an apocalyptic number.
It is an amenable number.
12931017 is a deficient number, since it is larger than the sum of its proper divisors (6146103).
12931017 is a wasteful number, since it uses less digits than its factorization.
12931017 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5604.
The product of its (nonzero) digits is 378, while the sum is 24.
The square root of 12931017 is about 3595.9723302606. The cubic root of 12931017 is about 234.7168280751.
Adding to 12931017 its reverse (71013921), we get a palindrome (83944938).
The spelling of 12931017 in words is "twelve million, nine hundred thirty-one thousand, seventeen".
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