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131201001210112 = 281736318302751
BaseRepresentation
bin11101110101001110011101…
…000100100100000100000000
3122012112200201100200010211021
4131311032131010210010000
5114144044122302210422
61143012524033555224
736430650055435441
oct3565163504440400
9565480640603737
10131201001210112
1138894039864299
121286b771a15b14
135829280411ac2
14245823b66b2c8
151027c8c103dc7
hex77539d124100

131201001210112 has 72 divisors (see below), whose sum is σ = 277371165238272. Its totient is φ = 61724636160000.

The previous prime is 131201001210107. The next prime is 131201001210131. The reversal of 131201001210112 is 211012100102131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

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, 11650737 + ... + 19953487.

It is an arithmetic number, because the mean of its divisors is an integer number (3852377294976).

Almost surely, 2131201001210112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131201001210112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138685582619136).

131201001210112 is an abundant number, since it is smaller than the sum of its proper divisors (146170164028160).

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

131201001210112 is an equidigital number, since it uses as much as digits as its factorization.

131201001210112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8306415 (or 8306401 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 131201001210112 its reverse (211012100102131), we get a palindrome (342213101312243).

The spelling of 131201001210112 in words is "one hundred thirty-one trillion, two hundred one billion, one million, two hundred ten thousand, one hundred twelve".

Divisors: 1 2 4 8 16 17 32 34 64 68 128 136 256 272 544 1088 2176 3631 4352 7262 14524 29048 58096 61727 116192 123454 232384 246908 464768 493816 929536 987632 1975264 3950528 7901056 8302751 15802112 16605502 33211004 66422008 132844016 141146767 265688032 282293534 531376064 564587068 1062752128 1129174136 2125504256 2258348272 4516696544 9033393088 18066786176 30147288881 36133572352 60294577762 120589155524 241178311048 482356622096 512503910977 964713244192 1025007821954 1929426488384 2050015643908 3858852976768 4100031287816 7717705953536 8200062575632 16400125151264 32800250302528 65600500605056 131201001210112