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131447083 = 491267713
BaseRepresentation
bin1111101010110…
…11100100101011
3100011100012111111
413311123210223
5232122301313
621013211151
73154165435
oct765334453
9304305444
10131447083
1168220159
1238030ab7
1321304351
1413659655
15b81743d
hex7d5b92b

131447083 has 4 divisors (see below), whose sum is σ = 131715288. Its totient is φ = 131178880.

The previous prime is 131447081. The next prime is 131447123. The reversal of 131447083 is 380744131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131447083 - 21 = 131447081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131447081) 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 3 ways as a sum of consecutive naturals, for example, 133366 + ... + 134347.

It is an arithmetic number, because the mean of its divisors is an integer number (32928822).

Almost surely, 2131447083 is an apocalyptic number.

131447083 is a deficient number, since it is larger than the sum of its proper divisors (268205).

131447083 is an equidigital number, since it uses as much as digits as its factorization.

131447083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268204.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 131447083 is about 11465.0374181683. The cubic root of 131447083 is about 508.4524187423.

The spelling of 131447083 in words is "one hundred thirty-one million, four hundred forty-seven thousand, eighty-three".

Divisors: 1 491 267713 131447083