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231001231023213 = 3791911969595887
BaseRepresentation
bin110100100001100000101010…
…010100010101110001101101
31010021220111112222010200220220
4310201200222110111301231
5220234211010120220323
62135144300040201553
766441200564211030
oct6441405224256155
91107814488120826
10231001231023213
11676710877a5252
1221aa9704a692b9
139bb8426a30a61
14410873ab01017
151ba8d136e70e3
hexd2182a515c6d

231001231023213 has 16 divisors (see below), whose sum is σ = 352384902942720. Its totient is φ = 131857068280176.

The previous prime is 231001231023163. The next prime is 231001231023221. The reversal of 231001231023213 is 312320132100132.

It is not a de Polignac number, because 231001231023213 - 229 = 231000694152301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231001231023293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5984778645 + ... + 5984817242.

It is an arithmetic number, because the mean of its divisors is an integer number (22024056433920).

Almost surely, 2231001231023213 is an apocalyptic number.

It is an amenable number.

231001231023213 is a deficient number, since it is larger than the sum of its proper divisors (121383671919507).

231001231023213 is a wasteful number, since it uses less digits than its factorization.

231001231023213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11969596816.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 231001231023213 its reverse (312320132100132), we get a palindrome (543321363123345).

The spelling of 231001231023213 in words is "two hundred thirty-one trillion, one billion, two hundred thirty-one million, twenty-three thousand, two hundred thirteen".

Divisors: 1 3 7 21 919 2757 6433 19299 11969595887 35908787661 83787171209 251361513627 11000058620153 33000175860459 77000410341071 231001231023213