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131580371 = 1316276221
BaseRepresentation
bin1111101011111…
…00000111010011
3100011120222100002
413311330013103
5232141032441
621020120215
73155262146
oct765740723
9304528302
10131580371
116830130a
123809606b
132134cc10
141369205d
15b841b9b
hex7d7c1d3

131580371 has 8 divisors (see below), whose sum is σ = 141811824. Its totient is φ = 121364640.

The previous prime is 131580367. The next prime is 131580373. The reversal of 131580371 is 173085131.

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 131580371 - 22 = 131580367 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131580373) 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, 18041 + ... + 24261.

It is an arithmetic number, because the mean of its divisors is an integer number (17726478).

Almost surely, 2131580371 is an apocalyptic number.

131580371 is a deficient number, since it is larger than the sum of its proper divisors (10231453).

131580371 is a wasteful number, since it uses less digits than its factorization.

131580371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7861.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 131580371 is about 11470.8487480221. The cubic root of 131580371 is about 508.6242184525.

The spelling of 131580371 in words is "one hundred thirty-one million, five hundred eighty thousand, three hundred seventy-one".

Divisors: 1 13 1627 6221 21151 80873 10121567 131580371