Base | Representation |
---|---|
bin | 100100101010100… |
… | …1110100000100101 |
3 | 10011202000202222220 |
4 | 1021111032200211 |
5 | 10004424114341 |
6 | 322025342553 |
7 | 42326250012 |
oct | 11125164045 |
9 | 3152022886 |
10 | 1230301221 |
11 | 581522576 |
12 | 2a4037a59 |
13 | 167b735b6 |
14 | b957a709 |
15 | 73023a66 |
hex | 4954e825 |
1230301221 has 8 divisors (see below), whose sum is σ = 1641720000. Its totient is φ = 819541632.
The previous prime is 1230301199. The next prime is 1230301223. The reversal of 1230301221 is 1221030321.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 1230301221 - 26 = 1230301157 is a prime.
It is a self number, because there is not a number n which added to its sum of digits gives 1230301221.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1230301223) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160425 + ... + 167918.
It is an arithmetic number, because the mean of its divisors is an integer number (205215000).
Almost surely, 21230301221 is an apocalyptic number.
It is an amenable number.
1230301221 is a deficient number, since it is larger than the sum of its proper divisors (411418779).
1230301221 is a wasteful number, since it uses less digits than its factorization.
1230301221 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 329595.
The product of its (nonzero) digits is 72, while the sum is 15.
The square root of 1230301221 is about 35075.6499725949. The cubic root of 1230301221 is about 1071.5287261321.
Adding to 1230301221 its reverse (1221030321), we get a palindrome (2451331542).
It can be divided in two parts, 123030 and 1221, that added together give a triangular number (124251 = T498).
The spelling of 1230301221 in words is "one billion, two hundred thirty million, three hundred one thousand, two hundred twenty-one".
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