Base | Representation |
---|---|
bin | 1111101010001… |
… | …11110101001100 |
3 | 100011012002120120 |
4 | 13311013311030 |
5 | 232112204340 |
6 | 21011344540 |
7 | 3153410616 |
oct | 765076514 |
9 | 304162516 |
10 | 131366220 |
11 | 68175427 |
12 | 37bb2150 |
13 | 212a65bb |
14 | 13637db6 |
15 | b7ed4d0 |
hex | 7d47d4c |
131366220 has 48 divisors (see below), whose sum is σ = 379696128. Its totient is φ = 33900480.
The previous prime is 131366159. The next prime is 131366231. The reversal of 131366220 is 22663131.
It is a happy number.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33454 + ... + 37173.
It is an arithmetic number, because the mean of its divisors is an integer number (7910336).
Almost surely, 2131366220 is an apocalyptic number.
131366220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
131366220 is an abundant number, since it is smaller than the sum of its proper divisors (248329908).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
131366220 is a wasteful number, since it uses less digits than its factorization.
131366220 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 70670 (or 70668 counting only the distinct ones).
The product of its (nonzero) digits is 1296, while the sum is 24.
The square root of 131366220 is about 11461.5103716744. The cubic root of 131366220 is about 508.3481348970.
The spelling of 131366220 in words is "one hundred thirty-one million, three hundred sixty-six thousand, two hundred twenty".
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