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54312331420 = 2257337200227
BaseRepresentation
bin110010100101010001…
…000110100010011100
312012012010020022020101
4302211101012202130
51342212424101140
640541205430444
73631624125364
oct624521064234
9165163208211
1054312331420
1121040993516
12a63910b424
1351772b9019
1428b33479a4
15162d26299a
hexca544689c

54312331420 has 24 divisors (see below), whose sum is σ = 115618308624. Its totient is φ = 21427330176.

The previous prime is 54312331387. The next prime is 54312331427. The reversal of 54312331420 is 2413321345.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54312331427) 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, 18598654 + ... + 18601573.

It is an arithmetic number, because the mean of its divisors is an integer number (4817429526).

Almost surely, 254312331420 is an apocalyptic number.

It is an amenable number.

54312331420 is an abundant number, since it is smaller than the sum of its proper divisors (61305977204).

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

54312331420 is a wasteful number, since it uses less digits than its factorization.

54312331420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37200309 (or 37200307 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 54312331420 its reverse (2413321345), we get a palindrome (56725652765).

The spelling of 54312331420 in words is "fifty-four billion, three hundred twelve million, three hundred thirty-one thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 73 146 292 365 730 1460 37200227 74400454 148800908 186001135 372002270 744004540 2715616571 5431233142 10862466284 13578082855 27156165710 54312331420