Base | Representation |
---|---|
bin | 1111101010101… |
… | …10001010010001 |
3 | 100011022002002101 |
4 | 13311112022101 |
5 | 232121044123 |
6 | 21012520401 |
7 | 3154044004 |
oct | 765261221 |
9 | 304262071 |
10 | 131424913 |
11 | 68205534 |
12 | 38020101 |
13 | 212c7229 |
14 | 1365153b |
15 | b810aad |
hex | 7d56291 |
131424913 has 2 divisors, whose sum is σ = 131424914. Its totient is φ = 131424912.
The previous prime is 131424869. The next prime is 131424929. The reversal of 131424913 is 319424131.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 71098624 + 60326289 = 8432^2 + 7767^2 .
It is a cyclic number.
It is not a de Polignac number, because 131424913 - 29 = 131424401 is a prime.
It is not a weakly prime, because it can be changed into another prime (131724913) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65712456 + 65712457.
It is an arithmetic number, because the mean of its divisors is an integer number (65712457).
Almost surely, 2131424913 is an apocalyptic number.
It is an amenable number.
131424913 is a deficient number, since it is larger than the sum of its proper divisors (1).
131424913 is an equidigital number, since it uses as much as digits as its factorization.
131424913 is an evil number, because the sum of its binary digits is even.
The product of its digits is 2592, while the sum is 28.
The square root of 131424913 is about 11464.0705249052. The cubic root of 131424913 is about 508.4238317660.
The spelling of 131424913 in words is "one hundred thirty-one million, four hundred twenty-four thousand, nine hundred thirteen".
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