Base | Representation |
---|---|
bin | 1111100111101… |
… | …01110011011000 |
3 | 100010120000200120 |
4 | 13303311303120 |
5 | 232020431412 |
6 | 21000233240 |
7 | 3150511224 |
oct | 763656330 |
9 | 303500616 |
10 | 131030232 |
11 | 67a65a53 |
12 | 37a6b820 |
13 | 211b96a8 |
14 | 1358b784 |
15 | b783b8c |
hex | 7cf5cd8 |
131030232 has 32 divisors (see below), whose sum is σ = 344817600. Its totient is φ = 41377824.
The previous prime is 131030231. The next prime is 131030243. The reversal of 131030232 is 232030131.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (131030231) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143218 + ... + 144129.
It is an arithmetic number, because the mean of its divisors is an integer number (10775550).
Almost surely, 2131030232 is an apocalyptic number.
131030232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.
It is an amenable number.
131030232 is an abundant number, since it is smaller than the sum of its proper divisors (213787368).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
131030232 is a wasteful number, since it uses less digits than its factorization.
131030232 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 287375 (or 287371 counting only the distinct ones).
The product of its (nonzero) digits is 108, while the sum is 15.
The square root of 131030232 is about 11446.8437571236. The cubic root of 131030232 is about 507.9143737301.
Adding to 131030232 its reverse (232030131), we get a palindrome (363060363).
The spelling of 131030232 in words is "one hundred thirty-one million, thirty thousand, two hundred thirty-two".
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