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13131212244112 = 248978711717099
BaseRepresentation
bin1011111100010101100100…
…1111011100010010010000
31201111022221202111011012101
42333011121033130102100
53210120210313302422
643532221242210144
72523461452311214
oct277053117342220
951438852434171
1013131212244112
114202a08a88866
121580b004b3954
13743363a50551
143357a84ca944
1517b88db53c27
hexbf1593dc490

13131212244112 has 40 divisors (see below), whose sum is σ = 25760278692000. Its totient is φ = 6483585875712.

The previous prime is 13131212244071. The next prime is 13131212244121. The reversal of 13131212244112 is 21144221213131.

13131212244112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4737862 + ... + 6979237.

It is an arithmetic number, because the mean of its divisors is an integer number (644006967300).

Almost surely, 213131212244112 is an apocalyptic number.

It is an amenable number.

13131212244112 is a deficient number, since it is larger than the sum of its proper divisors (12629066447888).

13131212244112 is a wasteful number, since it uses less digits than its factorization.

13131212244112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11717983 (or 11717977 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

Adding to 13131212244112 its reverse (21144221213131), we get a palindrome (34275433457243).

The spelling of 13131212244112 in words is "thirteen trillion, one hundred thirty-one billion, two hundred twelve million, two hundred forty-four thousand, one hundred twelve".

Divisors: 1 2 4 8 16 89 178 356 712 787 1424 1574 3148 6296 12592 70043 140086 280172 560344 1120688 11717099 23434198 46868396 93736792 187473584 1042821811 2085643622 4171287244 8342574488 9221356913 16685148976 18442713826 36885427652 73770855304 147541710608 820700765257 1641401530514 3282803061028 6565606122056 13131212244112