Base | Representation |
---|---|
bin | 1001000110111111000001… |
… | …00100101001000111011111 |
3 | 2121220222000210011001100101 |
4 | 10203133200210221013133 |
5 | 10111142344223000411 |
6 | 110334112322441531 |
7 | 4135130546253340 |
oct | 443374044510737 |
9 | 77828023131311 |
10 | 20031200203231 |
11 | 6423203336568 |
12 | 22b62205032a7 |
13 | b23c1b211959 |
14 | 4d372dc4a0c7 |
15 | 24b0ce03a8c1 |
hex | 1237e09291df |
20031200203231 has 8 divisors (see below), whose sum is σ = 22893004162080. Its totient is φ = 17169447226848.
The previous prime is 20031200203207. The next prime is 20031200203243. The reversal of 20031200203231 is 13230200213002.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 20031200203231 - 25 = 20031200203199 is a prime.
It is a super-2 number, since 2×200312002032312 (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 = 20031200203199 and 20031200203208.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (20031200201231) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11899936 + ... + 13478533.
It is an arithmetic number, because the mean of its divisors is an integer number (2861625520260).
Almost surely, 220031200203231 is an apocalyptic number.
20031200203231 is a deficient number, since it is larger than the sum of its proper divisors (2861803958849).
20031200203231 is a wasteful number, since it uses less digits than its factorization.
20031200203231 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 25491233.
The product of its (nonzero) digits is 432, while the sum is 19.
Adding to 20031200203231 its reverse (13230200213002), we get a palindrome (33261400416233).
The spelling of 20031200203231 in words is "twenty trillion, thirty-one billion, two hundred million, two hundred three thousand, two hundred thirty-one".
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