Base | Representation |
---|---|
bin | 101110010001… |
… | …100001011101 |
3 | 211211021202222 |
4 | 232101201131 |
5 | 11101133042 |
6 | 1111555125 |
7 | 205051406 |
oct | 56214135 |
9 | 24737688 |
10 | 12130397 |
11 | 6935824 |
12 | 408baa5 |
13 | 2689466 |
14 | 187a9ad |
15 | 10e92d2 |
hex | b9185d |
12130397 has 2 divisors, whose sum is σ = 12130398. Its totient is φ = 12130396.
The previous prime is 12130387. The next prime is 12130409. The reversal of 12130397 is 79303121.
12130397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 8213956 + 3916441 = 2866^2 + 1979^2 .
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-12130397 is a prime.
It is a Chen prime.
It is equal to p796022 and since 12130397 and 796022 have the same sum of digits, it is a Honaker prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (12130357) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6065198 + 6065199.
It is an arithmetic number, because the mean of its divisors is an integer number (6065199).
Almost surely, 212130397 is an apocalyptic number.
It is an amenable number.
12130397 is a deficient number, since it is larger than the sum of its proper divisors (1).
12130397 is an equidigital number, since it uses as much as digits as its factorization.
12130397 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 1134, while the sum is 26.
The square root of 12130397 is about 3482.8719471149. The cubic root of 12130397 is about 229.7691256033.
The spelling of 12130397 in words is "twelve million, one hundred thirty thousand, three hundred ninety-seven".
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