| Base | Representation |
|---|---|
| bin | 100001101101001… |
| … | …1011001100000100 |
| 3 | 2220211011210010101 |
| 4 | 1003122123030010 |
| 5 | 4304014004310 |
| 6 | 304121133444 |
| 7 | 40012226533 |
| oct | 10332331404 |
| 9 | 2824153111 |
| 10 | 1131000580 |
| 11 | 530469526 |
| 12 | 27692a284 |
| 13 | 150416218 |
| 14 | aa2cc31a |
| 15 | 6945b43a |
| hex | 4369b304 |
1131000580 has 96 divisors (see below), whose sum is σ = 2540160000. Its totient is φ = 422231040.
The previous prime is 1131000557. The next prime is 1131000583. The reversal of 1131000580 is 850001311.
1131000580 is a nontrivial binomial coefficient, being equal to C(47561, 2).
It is not an unprimeable number, because it can be changed into a prime (1131000583) 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 31 ways as a sum of consecutive naturals, for example, 4732101 + ... + 4732339.
It is an arithmetic number, because the mean of its divisors is an integer number (26460000).
Almost surely, 21131000580 is an apocalyptic number.
1131000580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
1131000580 is the 47560-th triangular number.
1131000580 is the 15854-th centered nonagonal number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 1131000580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1270080000).
1131000580 is an abundant number, since it is smaller than the sum of its proper divisors (1409159420).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1131000580 is a wasteful number, since it uses less digits than its factorization.
1131000580 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 517 (or 515 counting only the distinct ones).
The product of its (nonzero) digits is 120, while the sum is 19.
The square root of 1131000580 is about 33630.3520647644. The cubic root of 1131000580 is about 1041.8877756835.
Adding to 1131000580 its reverse (850001311), we get a palindrome (1981001891).
The spelling of 1131000580 in words is "one billion, one hundred thirty-one million, five hundred eighty", and thus it is an aban number.
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