Base | Representation |
---|---|
bin | 101111111100… |
… | …110110101111 |
3 | 212122121211201 |
4 | 233330312233 |
5 | 11204220111 |
6 | 1125230331 |
7 | 211562215 |
oct | 57746657 |
9 | 25577751 |
10 | 12570031 |
11 | 7106061 |
12 | 42623a7 |
13 | 27b15b6 |
14 | 1952cb5 |
15 | 11846c1 |
hex | bfcdaf |
12570031 has 2 divisors, whose sum is σ = 12570032. Its totient is φ = 12570030.
The previous prime is 12569971. The next prime is 12570037. The reversal of 12570031 is 13007521.
It is a strong prime.
It is an emirp because it is prime and its reverse (13007521) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 12570031 - 211 = 12567983 is a prime.
It is a super-2 number, since 2×125700312 = 316011358681922, which contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 12569990 and 12570008.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (12570037) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6285015 + 6285016.
It is an arithmetic number, because the mean of its divisors is an integer number (6285016).
Almost surely, 212570031 is an apocalyptic number.
12570031 is a deficient number, since it is larger than the sum of its proper divisors (1).
12570031 is an equidigital number, since it uses as much as digits as its factorization.
12570031 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 210, while the sum is 19.
The square root of 12570031 is about 3545.4239520825. The cubic root of 12570031 is about 232.5120416163.
Adding to 12570031 its reverse (13007521), we get a palindrome (25577552).
The spelling of 12570031 in words is "twelve million, five hundred seventy thousand, thirty-one".
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