Base | Representation |
---|---|
bin | 11101110101100011111111… |
… | …001111101010010110111011 |
3 | 122012121220101202122000122010 |
4 | 131311203333033222112323 |
5 | 114144434001004420011 |
6 | 1143031310244501003 |
7 | 36432426046444533 |
oct | 3565437717522673 |
9 | 565556352560563 |
10 | 131224123123131 |
11 | 388a2924551815 |
12 | 128741453aa763 |
13 | 582b4c681783c |
14 | 24593d24124c3 |
15 | 1028691e961a6 |
hex | 7758ff3ea5bb |
131224123123131 has 8 divisors (see below), whose sum is σ = 174965566688784. Its totient is φ = 87482714153120.
The previous prime is 131224123123129. The next prime is 131224123123199. The reversal of 131224123123131 is 131321321422131.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 131224123123131 - 21 = 131224123123129 is a prime.
It is a super-2 number, since 2×1312241231231312 (a number of 29 digits) contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (131224123123231) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2115541 + ... + 16337801.
It is an arithmetic number, because the mean of its divisors is an integer number (21870695836098).
Almost surely, 2131224123123131 is an apocalyptic number.
131224123123131 is a deficient number, since it is larger than the sum of its proper divisors (43741443565653).
131224123123131 is a wasteful number, since it uses less digits than its factorization.
131224123123131 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 17297821.
The product of its digits is 5184, while the sum is 30.
Adding to 131224123123131 its reverse (131321321422131), we get a palindrome (262545444545262).
The spelling of 131224123123131 in words is "one hundred thirty-one trillion, two hundred twenty-four billion, one hundred twenty-three million, one hundred twenty-three thousand, one hundred thirty-one".
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