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131043085 = 5371514691
BaseRepresentation
bin1111100111110…
…00111100001101
3100010120200022121
413303320330031
5232021334320
621000412541
73150563545
oct763707415
9303520277
10131043085
1167a74678
1237a77151
13211c24b4
1413592325
15b7878aa
hex7cf8f0d

131043085 has 16 divisors (see below), whose sum is σ = 162605952. Its totient is φ = 101304000.

The previous prime is 131043041. The next prime is 131043113. The reversal of 131043085 is 580340131.

It is not a de Polignac number, because 131043085 - 211 = 131041037 is a prime.

It is a Duffinian number.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 25590 + ... + 30280.

It is an arithmetic number, because the mean of its divisors is an integer number (10162872).

Almost surely, 2131043085 is an apocalyptic number.

It is an amenable number.

131043085 is a deficient number, since it is larger than the sum of its proper divisors (31562867).

131043085 is a wasteful number, since it uses less digits than its factorization.

131043085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4884.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 131043085 is about 11447.4051644903. The cubic root of 131043085 is about 507.9309806101.

The spelling of 131043085 in words is "one hundred thirty-one million, forty-three thousand, eighty-five".

Divisors: 1 5 37 151 185 755 4691 5587 23455 27935 173567 708341 867835 3541705 26208617 131043085