Base | Representation |
---|---|
bin | 100100101010110… |
… | …1110010000001100 |
3 | 10011202021101100120 |
4 | 1021111232100030 |
5 | 10004442244434 |
6 | 322032224540 |
7 | 42330331050 |
oct | 11125562014 |
9 | 3152241316 |
10 | 1230431244 |
11 | 581601229 |
12 | 2a409b150 |
13 | 167bba833 |
14 | b95b1c60 |
15 | 7304c349 |
hex | 4956e40c |
1230431244 has 48 divisors (see below), whose sum is σ = 3334953216. Its totient is φ = 345787200.
The previous prime is 1230431233. The next prime is 1230431249. The reversal of 1230431244 is 4421340321.
It is a super-2 number, since 2×12304312442 = 3027922092422775072, which contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (1230431249) 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 15 ways as a sum of consecutive naturals, for example, 114942 + ... + 125189.
It is an arithmetic number, because the mean of its divisors is an integer number (69478192).
Almost surely, 21230431244 is an apocalyptic number.
1230431244 is a gapful number since it is divisible by the number (14) formed by its first and last digit.
It is an amenable number.
1230431244 is an abundant number, since it is smaller than the sum of its proper divisors (2104521972).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1230431244 is a wasteful number, since it uses less digits than its factorization.
1230431244 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 240206 (or 240204 counting only the distinct ones).
The product of its (nonzero) digits is 2304, while the sum is 24.
The square root of 1230431244 is about 35077.5033889244. The cubic root of 1230431244 is about 1071.5664725716.
Adding to 1230431244 its reverse (4421340321), we get a palindrome (5651771565).
The spelling of 1230431244 in words is "one billion, two hundred thirty million, four hundred thirty-one thousand, two hundred forty-four".
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