Base | Representation |
---|---|
bin | 100111101010111… |
… | …0111100001110010 |
3 | 10102202202112112211 |
4 | 1033111313201302 |
5 | 10211232220110 |
6 | 340030442334 |
7 | 44662303600 |
oct | 11725674162 |
9 | 3382675484 |
10 | 1331132530 |
11 | 623431632 |
12 | 3119633aa |
13 | 182a185b0 |
14 | c8b06870 |
15 | 7bcde98a |
hex | 4f577872 |
1331132530 has 96 divisors (see below), whose sum is σ = 3032814960. Its totient is φ = 416908800.
The previous prime is 1331132501. The next prime is 1331132629. The reversal of 1331132530 is 352311331.
It is a happy number.
It can be written as a sum of positive squares in 8 ways, for example, as 453136369 + 877996161 = 21287^2 + 29631^2 .
It is an unprimeable number.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 642336 + ... + 644404.
Almost surely, 21331132530 is an apocalyptic number.
1331132530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
1331132530 is an abundant number, since it is smaller than the sum of its proper divisors (1701682430).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1331132530 is a wasteful number, since it uses less digits than its factorization.
1331132530 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2204 (or 2197 counting only the distinct ones).
The product of its (nonzero) digits is 810, while the sum is 22.
The square root of 1331132530 is about 36484.6889804477. The cubic root of 1331132530 is about 1100.0365084302.
Adding to 1331132530 its reverse (352311331), we get a palindrome (1683443861).
The spelling of 1331132530 in words is "one billion, three hundred thirty-one million, one hundred thirty-two thousand, five hundred thirty".
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