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231020543132210 = 25133124314290487
BaseRepresentation
bin110100100001110010101001…
…011010001100001000110010
31010021222100101212021111010002
4310201302221122030020302
5220240020033020212320
62135201212233510002
766442453264345556
oct6441625132141062
91107870355244102
10231020543132210
11676792979a5607
1221ab13b4572302
139bba1b3a48aa0
14410964d8c1866
151ba9593d83675
hexd21ca968c232

231020543132210 has 96 divisors (see below), whose sum is σ = 463810127832576. Its totient is φ = 82356736867200.

The previous prime is 231020543132209. The next prime is 231020543132257. The reversal of 231020543132210 is 12231345020132.

It is a super-3 number, since 3×2310205431322103 (a number of 44 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 51699587 + ... + 55990073.

It is an arithmetic number, because the mean of its divisors is an integer number (4831355498256).

Almost surely, 2231020543132210 is an apocalyptic number.

231020543132210 is an abundant number, since it is smaller than the sum of its proper divisors (232789584700366).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231020543132210 is a wasteful number, since it uses less digits than its factorization.

231020543132210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4291000 (or 4290969 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 231020543132210 its reverse (12231345020132), we get a palindrome (243251888152342).

The spelling of 231020543132210 in words is "two hundred thirty-one trillion, twenty billion, five hundred forty-three million, one hundred thirty-two thousand, two hundred ten".

Divisors: 1 2 5 10 13 26 31 62 65 130 155 310 403 431 806 862 961 1922 2015 2155 4030 4310 4805 5603 9610 11206 12493 13361 24986 26722 28015 56030 62465 66805 124930 133610 173693 347386 414191 828382 868465 1736930 2070955 4141910 4290487 5384483 8580974 10768966 21452435 26922415 42904870 53844830 55776331 111552662 133005097 266010194 278881655 557763310 665025485 1330050970 1729066261 1849199897 3458132522 3698399794 4123158007 8246316014 8645331305 9245999485 17290662610 18491998970 20615790035 24039598661 41231580070 48079197322 53601054091 57325196807 107202108182 114650393614 120197993305 240395986610 268005270455 286625984035 536010540910 573251968070 745227558491 1490455116982 1777081101017 3554162202034 3726137792455 7452275584910 8885405505085 17770811010170 23102054313221 46204108626442 115510271566105 231020543132210