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2131112203213 = 72919365383299
BaseRepresentation
bin11111000000110000001…
…011111001001111001101
321112201202212120212120111
4133000300023321033031
5234404004211000323
64311004110320021
7306652642562260
oct37006013711715
97481685525514
102131112203213
1175188830a724
122a50351b9011
13125c699a01c6
1475209952cd7
153a67d7d7c0d
hex1f0302f93cd

2131112203213 has 32 divisors (see below), whose sum is σ = 2536504992000. Its totient is φ = 1751832907776.

The previous prime is 2131112203193. The next prime is 2131112203219. The reversal of 2131112203213 is 3123022111312.

It is not a de Polignac number, because 2131112203213 - 225 = 2131078648781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131112203219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25542238 + ... + 25625536.

It is an arithmetic number, because the mean of its divisors is an integer number (79265781000).

Almost surely, 22131112203213 is an apocalyptic number.

It is an amenable number.

2131112203213 is a deficient number, since it is larger than the sum of its proper divisors (405392788787).

2131112203213 is a wasteful number, since it uses less digits than its factorization.

2131112203213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84181.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 2131112203213 its reverse (3123022111312), we get a palindrome (5254134314525).

The spelling of 2131112203213 in words is "two trillion, one hundred thirty-one billion, one hundred twelve million, two hundred three thousand, two hundred thirteen".

Divisors: 1 7 29 193 203 653 1351 4571 5597 18937 39179 83299 126029 132559 583093 882203 2415671 3654841 16076707 16909697 25583887 54394247 112536949 380759729 466224503 1577433163 3263571521 10498089671 11042032141 73486627697 304444600459 2131112203213