Base | Representation |
---|---|
bin | 1111101100101… |
… | …10110101101100 |
3 | 100011210112111100 |
4 | 13312112311230 |
5 | 232203033321 |
6 | 21022323100 |
7 | 3156226245 |
oct | 766266554 |
9 | 304715440 |
10 | 131689836 |
11 | 68376583 |
12 | 38129490 |
13 | 2138a9a5 |
14 | 136bdccc |
15 | b864326 |
hex | 7d96d6c |
131689836 has 36 divisors (see below), whose sum is σ = 350404600. Its totient is φ = 41586048.
The previous prime is 131689823. The next prime is 131689847. The reversal of 131689836 is 638986131.
It is a happy number.
It is a tau number, because it is divible by the number of its divisors (36).
It is a junction number, because it is equal to n+sod(n) for n = 131689791 and 131689800.
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 11 ways as a sum of consecutive naturals, for example, 95581 + ... + 96948.
Almost surely, 2131689836 is an apocalyptic number.
It is an amenable number.
131689836 is an abundant number, since it is smaller than the sum of its proper divisors (218714764).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
131689836 is a wasteful number, since it uses less digits than its factorization.
131689836 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 192558 (or 192553 counting only the distinct ones).
The product of its digits is 186624, while the sum is 45.
The square root of 131689836 is about 11475.6191989801. The cubic root of 131689836 is about 508.7652250916.
The spelling of 131689836 in words is "one hundred thirty-one million, six hundred eighty-nine thousand, eight hundred thirty-six".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.072 sec. • engine limits •