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131212213001342 = 21167286573106319
BaseRepresentation
bin11101110101011000111001…
…010110001001110001111110
3122012120202122201122011000022
4131311120321112021301332
5114144240103012020332
61143022020345332142
736431524646205434
oct3565307126116176
9565522581564008
10131212213001342
11388988725a8a60
1212871980797052
13582a3491916b5
1424589c270cd54
1510281e657b212
hex775639589c7e

131212213001342 has 32 divisors (see below), whose sum is σ = 217923208634880. Its totient is φ = 58749668081280.

The previous prime is 131212213001333. The next prime is 131212213001347. The reversal of 131212213001342 is 243100312212131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131212213001347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40687259 + ... + 43793577.

It is an arithmetic number, because the mean of its divisors is an integer number (6810100269840).

Almost surely, 2131212213001342 is an apocalyptic number.

131212213001342 is a deficient number, since it is larger than the sum of its proper divisors (86710995633538).

131212213001342 is a wasteful number, since it uses less digits than its factorization.

131212213001342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3135056.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 131212213001342 its reverse (243100312212131), we get a palindrome (374312525213473).

The spelling of 131212213001342 in words is "one hundred thirty-one trillion, two hundred twelve billion, two hundred thirteen million, one thousand, three hundred forty-two".

Divisors: 1 2 11 22 67 134 737 1474 28657 57314 315227 630454 1920019 3106319 3840038 6212638 21120209 34169509 42240418 68339018 208123373 416246746 2289357103 4578714206 89017783583 178035567166 979195619413 1958391238826 5964191500061 11928383000122 65606106500671 131212213001342