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131200323012012 = 22319954941508799
BaseRepresentation
bin11101110101001101110100…
…101001011100010110101100
3122012112121222002112002221010
4131311031310221130112230
5114144041230142341022
61143012332445505220
736430624212026502
oct3565156451342654
9565477862462833
10131200323012012
1138893820a55aa1
121286b602872210
1358291a2a67057
1424581b556a672
151027c4c7db50c
hex775374a5c5ac

131200323012012 has 24 divisors (see below), whose sum is σ = 307672449280000. Its totient is φ = 43513674968016.

The previous prime is 131200323011911. The next prime is 131200323012019. The reversal of 131200323012012 is 210210323002131.

It is a self number, because there is not a number n which added to its sum of digits gives 131200323012012.

It is not an unprimeable number, because it can be changed into a prime (131200323012019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27470752012 + ... + 27470756787.

Almost surely, 2131200323012012 is an apocalyptic number.

131200323012012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131200323012012 is an abundant number, since it is smaller than the sum of its proper divisors (176472126267988).

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

131200323012012 is a wasteful number, since it uses less digits than its factorization.

131200323012012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54941509005 (or 54941509003 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 131200323012012 its reverse (210210323002131), we get a palindrome (341410646014143).

The spelling of 131200323012012 in words is "one hundred thirty-one trillion, two hundred billion, three hundred twenty-three million, twelve thousand, twelve".

Divisors: 1 2 3 4 6 12 199 398 597 796 1194 2388 54941508799 109883017598 164824526397 219766035196 329649052794 659298105588 10933360251001 21866720502002 32800080753003 43733441004004 65600161506006 131200323012012