Base | Representation |
---|---|
bin | 100100101011000… |
… | …0001000011000111 |
3 | 10011202102021221221 |
4 | 1021112001003013 |
5 | 10010002230411 |
6 | 322034021211 |
7 | 42331101361 |
oct | 11126010307 |
9 | 3152367857 |
10 | 1230508231 |
11 | 581654057 |
12 | 2a4117807 |
13 | 167c168a4 |
14 | b95d1d31 |
15 | 73065071 |
hex | 495810c7 |
1230508231 has 2 divisors, whose sum is σ = 1230508232. Its totient is φ = 1230508230.
The previous prime is 1230508219. The next prime is 1230508241. The reversal of 1230508231 is 1328050321.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 1230508231 - 213 = 1230500039 is a prime.
It is a super-2 number, since 2×12305082312 = 3028301013117498722, which contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 1230508196 and 1230508205.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (1230508241) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615254115 + 615254116.
It is an arithmetic number, because the mean of its divisors is an integer number (615254116).
Almost surely, 21230508231 is an apocalyptic number.
1230508231 is a deficient number, since it is larger than the sum of its proper divisors (1).
1230508231 is an equidigital number, since it uses as much as digits as its factorization.
1230508231 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 1440, while the sum is 25.
The square root of 1230508231 is about 35078.6007560165. The cubic root of 1230508231 is about 1071.5888210958.
Adding to 1230508231 its reverse (1328050321), we get a palindrome (2558558552).
The spelling of 1230508231 in words is "one billion, two hundred thirty million, five hundred eight thousand, two hundred thirty-one".
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