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131201130322420 = 225231072665606061
BaseRepresentation
bin11101110101001110100100…
…110001000101100111110100
3122012112201001100121201121121
4131311032210301011213310
5114144044403330304140
61143012544525153324
736430653214041244
oct3565164461054764
9565481040551547
10131201130322420
11388940a572a284
121286b7a90bb844
1358292a10a9512
142458250879b24
151027c9860964a
hex7753a4c459f4

131201130322420 has 48 divisors (see below), whose sum is σ = 290188538333568. Its totient is φ = 49729546655360.

The previous prime is 131201130322349. The next prime is 131201130322501. The reversal of 131201130322420 is 24223031102131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1332753811 + ... + 1332852250.

It is an arithmetic number, because the mean of its divisors is an integer number (6045594548616).

Almost surely, 2131201130322420 is an apocalyptic number.

131201130322420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131201130322420 is an abundant number, since it is smaller than the sum of its proper divisors (158987408011148).

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

131201130322420 is a wasteful number, since it uses less digits than its factorization.

131201130322420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2665606200 (or 2665606198 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 131201130322420 its reverse (24223031102131), we get a palindrome (155424161424551).

The spelling of 131201130322420 in words is "one hundred thirty-one trillion, two hundred one billion, one hundred thirty million, three hundred twenty-two thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 23 46 92 107 115 214 230 428 460 535 1070 2140 2461 4922 9844 12305 24610 49220 2665606061 5331212122 10662424244 13328030305 26656060610 53312121220 61308939403 122617878806 245235757612 285219848527 306544697015 570439697054 613089394030 1140879394108 1226178788060 1426099242635 2852198485270 5704396970540 6560056516121 13120113032242 26240226064484 32800282580605 65600565161210 131201130322420