Base | Representation |
---|---|
bin | 1001001001111001011111… |
… | …00101101000010110110011 |
3 | 2122021112102121121020112000 |
4 | 10210330233211220112303 |
5 | 10114312410342011011 |
6 | 110452110213305043 |
7 | 4145303426365203 |
oct | 444745745502663 |
9 | 78245377536460 |
10 | 20131310110131 |
11 | 646170580a310 |
12 | 23116bb035183 |
13 | b304b372325c |
14 | 4d850971a403 |
15 | 24d9dcc35356 |
hex | 124f2f9685b3 |
20131310110131 has 64 divisors (see below), whose sum is σ = 32655907468800. Its totient is φ = 12155658076800.
The previous prime is 20131310110111. The next prime is 20131310110133. The reversal of 20131310110131 is 13101101313102.
20131310110131 is a `hidden beast` number, since 201 + 31 + 310 + 110 + 13 + 1 = 666.
It is not a de Polignac number, because 20131310110131 - 239 = 19581554296243 is a prime.
It is a super-2 number, since 2×201313101101312 (a number of 27 digits) contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (20131310110133) by changing a digit.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 210484501 + ... + 210580121.
It is an arithmetic number, because the mean of its divisors is an integer number (510248554200).
Almost surely, 220131310110131 is an apocalyptic number.
20131310110131 is a deficient number, since it is larger than the sum of its proper divisors (12524597358669).
20131310110131 is a wasteful number, since it uses less digits than its factorization.
20131310110131 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 98257 (or 98251 counting only the distinct ones).
The product of its (nonzero) digits is 54, while the sum is 18.
Adding to 20131310110131 its reverse (13101101313102), we get a palindrome (33232411423233).
The spelling of 20131310110131 in words is "twenty trillion, one hundred thirty-one billion, three hundred ten million, one hundred ten thousand, one hundred thirty-one".
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