Base | Representation |
---|---|
bin | 1111101001001… |
… | …10100110110111 |
3 | 100010221011220101 |
4 | 13310212212313 |
5 | 232043331020 |
6 | 21004414531 |
7 | 3152303101 |
oct | 764464667 |
9 | 303834811 |
10 | 131230135 |
11 | 68092163 |
12 | 37b47447 |
13 | 2125968a |
14 | 13600571 |
15 | b7c300a |
hex | 7d269b7 |
131230135 has 16 divisors (see below), whose sum is σ = 161969472. Its totient is φ = 102009600.
The previous prime is 131230117. The next prime is 131230147. The reversal of 131230135 is 531032131.
It is not a de Polignac number, because 131230135 - 219 = 130705847 is a prime.
It is a Duffinian number.
It is a congruent number.
It is an unprimeable number.
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 15 ways as a sum of consecutive naturals, for example, 55630 + ... + 57940.
It is an arithmetic number, because the mean of its divisors is an integer number (10123092).
Almost surely, 2131230135 is an apocalyptic number.
131230135 is a deficient number, since it is larger than the sum of its proper divisors (30739337).
131230135 is a wasteful number, since it uses less digits than its factorization.
131230135 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2634.
The product of its (nonzero) digits is 270, while the sum is 19.
The square root of 131230135 is about 11455.5722249044. The cubic root of 131230135 is about 508.1725381124.
Adding to 131230135 its reverse (531032131), we get a palindrome (662262266).
The spelling of 131230135 in words is "one hundred thirty-one million, two hundred thirty thousand, one hundred thirty-five".
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