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131007104 = 271278059
BaseRepresentation
bin1111100111100…
…00001010000000
3100010111211221222
413303300022000
5232014211404
620555534212
73150353624
oct763601200
9303454858
10131007104
1167a4a638
1237a5a368
13211abcc7
1413583184
15b77bdbe
hex7cf0280

131007104 has 32 divisors (see below), whose sum is σ = 263078400. Its totient is φ = 64979712.

The previous prime is 131007059. The next prime is 131007113. The reversal of 131007104 is 401700131.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×1310071042 = 34325722596933632, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12227 + ... + 20285.

It is an arithmetic number, because the mean of its divisors is an integer number (8221200).

Almost surely, 2131007104 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 131007104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131539200).

131007104 is an abundant number, since it is smaller than the sum of its proper divisors (132071296).

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

131007104 is an equidigital number, since it uses as much as digits as its factorization.

131007104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8200 (or 8188 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 131007104 is about 11445.8334777333. The cubic root of 131007104 is about 507.8844881720.

Adding to 131007104 its reverse (401700131), we get a palindrome (532707235).

The spelling of 131007104 in words is "one hundred thirty-one million, seven thousand, one hundred four".

Divisors: 1 2 4 8 16 32 64 127 128 254 508 1016 2032 4064 8059 8128 16118 16256 32236 64472 128944 257888 515776 1023493 1031552 2046986 4093972 8187944 16375888 32751776 65503552 131007104