Base | Representation |
---|---|
bin | 1111101001000… |
… | …01101100110000 |
3 | 100010220011022211 |
4 | 13310201230300 |
5 | 232042210112 |
6 | 21004141504 |
7 | 3152160352 |
oct | 764415460 |
9 | 303804284 |
10 | 131210032 |
11 | 68079048 |
12 | 37b37894 |
13 | 21250495 |
14 | 135d70d2 |
15 | b7bc0a7 |
hex | 7d21b30 |
131210032 has 20 divisors (see below), whose sum is σ = 265273200. Its totient is φ = 62752448.
The previous prime is 131210021. The next prime is 131210083. The reversal of 131210032 is 230012131.
It is a junction number, because it is equal to n+sod(n) for n = 131209994 and 131210021.
It is an unprimeable number.
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 3 ways as a sum of consecutive naturals, for example, 177907 + ... + 178642.
It is an arithmetic number, because the mean of its divisors is an integer number (13263660).
Almost surely, 2131210032 is an apocalyptic number.
It is an amenable number.
131210032 is an abundant number, since it is smaller than the sum of its proper divisors (134063168).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
131210032 is a wasteful number, since it uses less digits than its factorization.
131210032 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 356580 (or 356574 counting only the distinct ones).
The product of its (nonzero) digits is 36, while the sum is 13.
The square root of 131210032 is about 11454.6947580457. The cubic root of 131210032 is about 508.1465879899.
Adding to 131210032 its reverse (230012131), we get a palindrome (361222163).
The spelling of 131210032 in words is "one hundred thirty-one million, two hundred ten thousand, thirty-two".
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