Base | Representation |
---|---|
bin | 111101000011110011… |
… | …1000101111100000011 |
3 | 110112110021022001201202 |
4 | 1322013213011330003 |
5 | 4122020243102404 |
6 | 140123154251415 |
7 | 12321244143035 |
oct | 1720747057403 |
9 | 415407261652 |
10 | 131124190979 |
11 | 50678207491 |
12 | 214b5286b6b |
13 | c498a753b2 |
14 | 64bc903c55 |
15 | 36268c721e |
hex | 1e879c5f03 |
131124190979 has 4 divisors (see below), whose sum is σ = 131124951600. Its totient is φ = 131123430360.
The previous prime is 131124190973. The next prime is 131124190997. The reversal of 131124190979 is 979091421131.
It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 979091421131 = 67 ⋅14613304793.
It is a cyclic number.
It is not a de Polignac number, because 131124190979 - 224 = 131107413763 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (131124190973) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15797 + ... + 512345.
It is an arithmetic number, because the mean of its divisors is an integer number (32781237900).
Almost surely, 2131124190979 is an apocalyptic number.
131124190979 is a deficient number, since it is larger than the sum of its proper divisors (760621).
131124190979 is an equidigital number, since it uses as much as digits as its factorization.
131124190979 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 760620.
The product of its (nonzero) digits is 122472, while the sum is 47.
The spelling of 131124190979 in words is "one hundred thirty-one billion, one hundred twenty-four million, one hundred ninety thousand, nine hundred seventy-nine".
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