Base | Representation |
---|---|
bin | 100100101010010… |
… | …0100101111101011 |
3 | 10011201201002100010 |
4 | 1021110210233223 |
5 | 10004403131110 |
6 | 322021543003 |
7 | 42324635202 |
oct | 11124445753 |
9 | 3151632303 |
10 | 1230130155 |
11 | 581415aa1 |
12 | 2a3b74a63 |
13 | 167b13787 |
14 | b9534239 |
15 | 72edd020 |
hex | 49524beb |
1230130155 has 8 divisors (see below), whose sum is σ = 1968208272. Its totient is φ = 656069408.
The previous prime is 1230130151. The next prime is 1230130169. The reversal of 1230130155 is 5510310321.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 1230130155 - 22 = 1230130151 is a prime.
It is not an unprimeable number, because it can be changed into a prime (1230130151) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41004324 + ... + 41004353.
It is an arithmetic number, because the mean of its divisors is an integer number (246026034).
Almost surely, 21230130155 is an apocalyptic number.
1230130155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
1230130155 is a deficient number, since it is larger than the sum of its proper divisors (738078117).
1230130155 is an equidigital number, since it uses as much as digits as its factorization.
1230130155 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 82008685.
The product of its (nonzero) digits is 450, while the sum is 21.
The square root of 1230130155 is about 35073.2113585283. The cubic root of 1230130155 is about 1071.4790606176.
Adding to 1230130155 its reverse (5510310321), we get a palindrome (6740440476).
The spelling of 1230130155 in words is "one billion, two hundred thirty million, one hundred thirty thousand, one hundred fifty-five".
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