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131550105 = 358770007
BaseRepresentation
bin1111101011101…
…00101110011001
3100011112102211010
413311310232121
5232134100410
621015324133
73155105001
oct765645631
9304472733
10131550105
11682905a5
1238080649
132133c1cb
1413685001
15b837c20
hex7d74b99

131550105 has 8 divisors (see below), whose sum is σ = 210480192. Its totient is φ = 70160048.

The previous prime is 131550079. The next prime is 131550113. The reversal of 131550105 is 501055131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131550105 - 25 = 131550073 is a prime.

It is a super-2 number, since 2×1315501052 = 34610860251022050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4384989 + ... + 4385018.

It is an arithmetic number, because the mean of its divisors is an integer number (26310024).

Almost surely, 2131550105 is an apocalyptic number.

131550105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131550105 is a deficient number, since it is larger than the sum of its proper divisors (78930087).

131550105 is an equidigital number, since it uses as much as digits as its factorization.

131550105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8770015.

The product of its (nonzero) digits is 375, while the sum is 21.

The square root of 131550105 is about 11469.5294149324. The cubic root of 131550105 is about 508.5852176985.

The spelling of 131550105 in words is "one hundred thirty-one million, five hundred fifty thousand, one hundred five".

Divisors: 1 3 5 15 8770007 26310021 43850035 131550105