Base | Representation |
---|---|
bin | 111101000100000010… |
… | …1010000111010000111 |
3 | 110112110211011220012000 |
4 | 1322020011100322013 |
5 | 4122024304201411 |
6 | 140124040000343 |
7 | 12321401314056 |
oct | 1721005207207 |
9 | 415424156160 |
10 | 131132100231 |
11 | 50681719860 |
12 | 214b7a600b3 |
13 | c49a5b4422 |
14 | 64bd9a239d |
15 | 362743a956 |
hex | 1e88150e87 |
131132100231 has 16 divisors (see below), whose sum is σ = 211930667520. Its totient is φ = 79473999960.
The previous prime is 131132100223. The next prime is 131132100241. The reversal of 131132100231 is 132001231131.
131132100231 is a `hidden beast` number, since 1 + 311 + 321 + 0 + 0 + 2 + 31 = 666.
It is not a de Polignac number, because 131132100231 - 23 = 131132100223 is a prime.
It is a super-2 number, since 2×1311321002312 (a number of 23 digits) contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (131132100241) 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, 220760815 + ... + 220761408.
It is an arithmetic number, because the mean of its divisors is an integer number (13245666720).
Almost surely, 2131132100231 is an apocalyptic number.
131132100231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.
131132100231 is a deficient number, since it is larger than the sum of its proper divisors (80798567289).
131132100231 is a wasteful number, since it uses less digits than its factorization.
131132100231 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 441522243 (or 441522237 counting only the distinct ones).
The product of its (nonzero) digits is 108, while the sum is 18.
Adding to 131132100231 its reverse (132001231131), we get a palindrome (263133331362).
The spelling of 131132100231 in words is "one hundred thirty-one billion, one hundred thirty-two million, one hundred thousand, two hundred thirty-one".
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