Base | Representation |
---|---|
bin | 1111110010111… |
… | …11011111000001 |
3 | 100020100021212001 |
4 | 13321133133001 |
5 | 232410333211 |
6 | 21052104001 |
7 | 3166221301 |
oct | 771373701 |
9 | 306307761 |
10 | 132511681 |
11 | 68887a95 |
12 | 38465001 |
13 | 215b7aa3 |
14 | 13855601 |
15 | b977ac1 |
hex | 7e5f7c1 |
132511681 has 16 divisors (see below), whose sum is σ = 143535040. Its totient is φ = 121927680.
The previous prime is 132511679. The next prime is 132511693. The reversal of 132511681 is 186115231.
It is a 2-Lehmer number, since φ(132511681) divides (132511681-1)2.
It is a cyclic number.
It is a Carmichael number.
It is not a de Polignac number, because 132511681 - 21 = 132511679 is a prime.
It is a super-2 number, since 2×1325116812 = 35118691202891522, which contains 22 as substring.
It is a deceptive number, since it divides R132511680.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (132511601) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196561 + ... + 197233.
It is an arithmetic number, because the mean of its divisors is an integer number (8970940).
It is a Poulet number, since it divides 2132511680-1.
Almost surely, 2132511681 is an apocalyptic number.
It is an amenable number.
132511681 is a deficient number, since it is larger than the sum of its proper divisors (11023359).
132511681 is a wasteful number, since it uses less digits than its factorization.
132511681 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 976.
The product of its digits is 1440, while the sum is 28.
The square root of 132511681 is about 11511.3718122559. The cubic root of 132511681 is about 509.8213920255.
The spelling of 132511681 in words is "one hundred thirty-two million, five hundred eleven thousand, six hundred eighty-one".
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