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131109200 = 24522314251
BaseRepresentation
bin1111101000010…
…01000101010000
3100010201001000022
413310021011100
5232030443300
621002043012
73151260365
oct764110520
9303631008
10131109200
116800a312
1237aa9468
1321216611
14135ac46c
15b79c285
hex7d09150

131109200 has 60 divisors (see below), whose sum is σ = 328708128. Its totient is φ = 50160000.

The previous prime is 131109197. The next prime is 131109217. The reversal of 131109200 is 2901131.

It is a happy number.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 2075 + ... + 16325.

Almost surely, 2131109200 is an apocalyptic number.

131109200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131109200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164354064).

131109200 is an abundant number, since it is smaller than the sum of its proper divisors (197598928).

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

131109200 is a wasteful number, since it uses less digits than its factorization.

131109200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14292 (or 14281 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 131109200 is about 11450.2925726813. The cubic root of 131109200 is about 508.0163881708.

The spelling of 131109200 in words is "one hundred thirty-one million, one hundred nine thousand, two hundred".

Divisors: 1 2 4 5 8 10 16 20 23 25 40 46 50 80 92 100 115 184 200 230 368 400 460 575 920 1150 1840 2300 4600 9200 14251 28502 57004 71255 114008 142510 228016 285020 327773 356275 570040 655546 712550 1140080 1311092 1425100 1638865 2622184 2850200 3277730 5244368 5700400 6555460 8194325 13110920 16388650 26221840 32777300 65554600 131109200