Base | Representation |
---|---|
bin | 101111011001… |
… | …011110101011 |
3 | 212101021002001 |
4 | 233121132223 |
5 | 11140101011 |
6 | 1122151431 |
7 | 210416605 |
oct | 57313653 |
9 | 25337061 |
10 | 12425131 |
11 | 7017204 |
12 | 41b2577 |
13 | 2760664 |
14 | 1916175 |
15 | 11567c1 |
hex | bd97ab |
12425131 has 2 divisors, whose sum is σ = 12425132. Its totient is φ = 12425130.
The previous prime is 12425117. The next prime is 12425143. The reversal of 12425131 is 13152421.
It is a strong prime.
It is an emirp because it is prime and its reverse (13152421) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 12425131 - 29 = 12424619 is a prime.
It is a super-2 number, since 2×124251312 = 308767760734322, which contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 12425099 and 12425108.
It is not a weakly prime, because it can be changed into another prime (12425731) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6212565 + 6212566.
It is an arithmetic number, because the mean of its divisors is an integer number (6212566).
Almost surely, 212425131 is an apocalyptic number.
12425131 is a deficient number, since it is larger than the sum of its proper divisors (1).
12425131 is an equidigital number, since it uses as much as digits as its factorization.
12425131 is an evil number, because the sum of its binary digits is even.
The product of its digits is 240, while the sum is 19.
The square root of 12425131 is about 3524.9299283816. The cubic root of 12425131 is about 231.6151653599.
Adding to 12425131 its reverse (13152421), we get a palindrome (25577552).
The spelling of 12425131 in words is "twelve million, four hundred twenty-five thousand, one hundred thirty-one".
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