Base | Representation |
---|---|
bin | 100100000100001… |
… | …0101010111100111 |
3 | 10010100002200210201 |
4 | 1020020111113213 |
5 | 4434244103411 |
6 | 320025331331 |
7 | 41663025202 |
oct | 11010252747 |
9 | 3110080721 |
10 | 1210144231 |
11 | 5711052aa |
12 | 299336b47 |
13 | 16393689a |
14 | b6a10939 |
15 | 713913c1 |
hex | 482155e7 |
1210144231 has 2 divisors, whose sum is σ = 1210144232. Its totient is φ = 1210144230.
The previous prime is 1210144223. The next prime is 1210144253. The reversal of 1210144231 is 1324410121.
It is a weak prime.
It is an emirp because it is prime and its reverse (1324410121) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 1210144231 - 23 = 1210144223 is a prime.
It is a super-2 number, since 2×12101442312 = 2928898119645162722, which contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 1210144199 and 1210144208.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (1210144211) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605072115 + 605072116.
It is an arithmetic number, because the mean of its divisors is an integer number (605072116).
Almost surely, 21210144231 is an apocalyptic number.
1210144231 is a deficient number, since it is larger than the sum of its proper divisors (1).
1210144231 is an equidigital number, since it uses as much as digits as its factorization.
1210144231 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 192, while the sum is 19.
The square root of 1210144231 is about 34787.1273749357. The cubic root of 1210144231 is about 1065.6445747198.
Adding to 1210144231 its reverse (1324410121), we get a palindrome (2534554352).
The spelling of 1210144231 in words is "one billion, two hundred ten million, one hundred forty-four thousand, two hundred thirty-one".
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