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131943085 = 549952883
BaseRepresentation
bin1111101110101…
…00101010101101
3100012021101212221
413313110222231
5232234134320
621031555341
73161332501
oct767245255
9305241787
10131943085
116852987a
123822bb51
1321449041
1413748301
15b8b43aa
hex7dd4aad

131943085 has 8 divisors (see below), whose sum is σ = 158652000. Its totient is φ = 105340944.

The previous prime is 131943059. The next prime is 131943089. The reversal of 131943085 is 580349131.

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 131943085 - 211 = 131941037 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131943085.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131943089) by changing a digit.

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, 23947 + ... + 28936.

It is an arithmetic number, because the mean of its divisors is an integer number (19831500).

Almost surely, 2131943085 is an apocalyptic number.

It is an amenable number.

131943085 is a deficient number, since it is larger than the sum of its proper divisors (26708915).

131943085 is an equidigital number, since it uses as much as digits as its factorization.

131943085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53387.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 131943085 is about 11486.6481185766. The cubic root of 131943085 is about 509.0911469300.

The spelling of 131943085 in words is "one hundred thirty-one million, nine hundred forty-three thousand, eighty-five".

Divisors: 1 5 499 2495 52883 264415 26388617 131943085