Base | Representation |
---|---|
bin | 1111101010110… |
… | …10000111111000 |
3 | 100011022220100112 |
4 | 13311122013320 |
5 | 232122104034 |
6 | 21013123452 |
7 | 3154142222 |
oct | 765320770 |
9 | 304286315 |
10 | 131441144 |
11 | 6821674a |
12 | 38029588 |
13 | 21301733 |
14 | 13657412 |
15 | b8157ce |
hex | 7d5a1f8 |
131441144 has 32 divisors (see below), whose sum is σ = 265388400. Its totient is φ = 60802560.
The previous prime is 131441117. The next prime is 131441243. The reversal of 131441144 is 441144131.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167 + ... + 16214.
Almost surely, 2131441144 is an apocalyptic number.
It is an amenable number.
131441144 is an abundant number, since it is smaller than the sum of its proper divisors (133947256).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
131441144 is a wasteful number, since it uses less digits than its factorization.
131441144 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 16463 (or 16459 counting only the distinct ones).
The product of its digits is 768, while the sum is 23.
The square root of 131441144 is about 11464.7784104186. The cubic root of 131441144 is about 508.4447610489. Note that the first 3 decimals are identical.
Adding to 131441144 its reverse (441144131), we get a palindrome (572585275).
The spelling of 131441144 in words is "one hundred thirty-one million, four hundred forty-one thousand, one hundred forty-four".
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