Base | Representation |
---|---|
bin | 110100100100011100110001… |
… | …010101110001011110000011 |
3 | 1010022121210220101112210020221 |
4 | 310210130301111301132003 |
5 | 220301013134322132321 |
6 | 2135421142304043511 |
7 | 66461611063565452 |
oct | 6444346125613603 |
9 | 1108553811483227 |
10 | 231203212302211 |
11 | 67739805986706 |
12 | 21b20894003597 |
13 | 9c014a5671066 |
14 | 411441bda6b99 |
15 | 1bae1d5a81e41 |
hex | d24731571783 |
231203212302211 has 32 divisors (see below), whose sum is σ = 262150694092800. Its totient is φ = 202748714958240.
The previous prime is 231203212302067. The next prime is 231203212302221. The reversal of 231203212302211 is 112203212302132.
It is a cyclic number.
It is not a de Polignac number, because 231203212302211 - 227 = 231203078084483 is a prime.
It is a super-2 number, since 2×2312032123022112 (a number of 30 digits) contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (231203212302221) 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 31 ways as a sum of consecutive naturals, for example, 772828720 + ... + 773127826.
It is an arithmetic number, because the mean of its divisors is an integer number (8192209190400).
Almost surely, 2231203212302211 is an apocalyptic number.
231203212302211 is a deficient number, since it is larger than the sum of its proper divisors (30947481790589).
231203212302211 is a wasteful number, since it uses less digits than its factorization.
231203212302211 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 356239.
The product of its (nonzero) digits is 1728, while the sum is 25.
Adding to 231203212302211 its reverse (112203212302132), we get a palindrome (343406424604343).
The spelling of 231203212302211 in words is "two hundred thirty-one trillion, two hundred three billion, two hundred twelve million, three hundred two thousand, two hundred eleven".
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