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3131302211112 = 233831571938861
BaseRepresentation
bin101101100100010000001…
…001111110111000101000
3102002100102211112200220010
4231210100021332320220
5402300401331223422
610354300025331520
7442141405431225
oct55442011767050
912070384480803
103131302211112
11aa7a83513339
12426a4a936ba0
13199385434c4a
14ab7ad2da94c
15566bba82b0c
hex2d91027ee28

3131302211112 has 32 divisors (see below), whose sum is σ = 7922571864480. Its totient is φ = 1031191892160.

The previous prime is 3131302211027. The next prime is 3131302211117. The reversal of 3131302211112 is 2111122031313.

It is not an unprimeable number, because it can be changed into a prime (3131302211117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 785967439 + ... + 785971422.

It is an arithmetic number, because the mean of its divisors is an integer number (247580370765).

Almost surely, 23131302211112 is an apocalyptic number.

It is an amenable number.

3131302211112 is an abundant number, since it is smaller than the sum of its proper divisors (4791269653368).

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

3131302211112 is a wasteful number, since it uses less digits than its factorization.

3131302211112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1571938953 (or 1571938949 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 3131302211112 its reverse (2111122031313), we get a palindrome (5242424242425).

The spelling of 3131302211112 in words is "three trillion, one hundred thirty-one billion, three hundred two million, two hundred eleven thousand, one hundred twelve".

Divisors: 1 2 3 4 6 8 12 24 83 166 249 332 498 664 996 1992 1571938861 3143877722 4715816583 6287755444 9431633166 12575510888 18863266332 37726532664 130470925463 260941850926 391412776389 521883701852 782825552778 1043767403704 1565651105556 3131302211112