Base | Representation |
---|---|
bin | 1111101001110… |
… | …00011011011010 |
3 | 100011001220000220 |
4 | 13310320123122 |
5 | 232103200010 |
6 | 21010140510 |
7 | 3153025650 |
oct | 764703332 |
9 | 304056026 |
10 | 131303130 |
11 | 68131a92 |
12 | 37b81736 |
13 | 2128397a |
14 | 1361cdd0 |
15 | b7d9970 |
hex | 7d386da |
131303130 has 32 divisors (see below), whose sum is σ = 360146304. Its totient is φ = 30012096.
The previous prime is 131303119. The next prime is 131303147. The reversal of 131303130 is 31303131.
It is a Harshad number since it is a multiple of its sum of digits (15).
It is a Curzon 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, 312417 + ... + 312836.
It is an arithmetic number, because the mean of its divisors is an integer number (11254572).
Almost surely, 2131303130 is an apocalyptic number.
131303130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
131303130 is an abundant number, since it is smaller than the sum of its proper divisors (228843174).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
131303130 is a wasteful number, since it uses less digits than its factorization.
131303130 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 625270.
The product of its (nonzero) digits is 81, while the sum is 15.
The square root of 131303130 is about 11458.7577860779. The cubic root of 131303130 is about 508.2667420309.
Adding to 131303130 its reverse (31303131), we get a palindrome (162606261).
Subtracting from 131303130 its reverse (31303131), we obtain a palindrome (99999999).
The spelling of 131303130 in words is "one hundred thirty-one million, three hundred three thousand, one hundred thirty".
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