Base | Representation |
---|---|
bin | 1001001001111001010101… |
… | …10101001011011101111111 |
3 | 2122021112020001102110122101 |
4 | 10210330222311023131333 |
5 | 10114312224424100111 |
6 | 110452054242525531 |
7 | 4145301440122534 |
oct | 444745265133577 |
9 | 78245201373571 |
10 | 20131230300031 |
11 | 6461674758854 |
12 | 23116983668a7 |
13 | b304a002b446 |
14 | 4d84dcca2d8b |
15 | 24d9d5c1cbc1 |
hex | 124f2ad4b77f |
20131230300031 has 8 divisors (see below), whose sum is σ = 20323099834128. Its totient is φ = 19940247000000.
The previous prime is 20131230299977. The next prime is 20131230300091. The reversal of 20131230300031 is 13000303213102.
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 20131230300031 - 239 = 19581474486143 is a prime.
It is a super-2 number, since 2×201312303000312 (a number of 27 digits) contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 20131230299981 and 20131230300008.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (20131230300091) 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, 221512870 + ... + 221603731.
It is an arithmetic number, because the mean of its divisors is an integer number (2540387479266).
Almost surely, 220131230300031 is an apocalyptic number.
20131230300031 is a deficient number, since it is larger than the sum of its proper divisors (191869534097).
20131230300031 is a wasteful number, since it uses less digits than its factorization.
20131230300031 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 443117033.
The product of its (nonzero) digits is 324, while the sum is 19.
Adding to 20131230300031 its reverse (13000303213102), we get a palindrome (33131533513133).
The spelling of 20131230300031 in words is "twenty trillion, one hundred thirty-one billion, two hundred thirty million, three hundred thousand, thirty-one".
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