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131348539 = 7194192357
BaseRepresentation
bin1111101010000…
…11100000111011
3100011011012022201
413311003200323
5232111123124
621011131031
73153305230
oct765034073
9304135281
10131348539
1168163113
1237ba3a77
132129b53a
1413631787
15b7e8144
hex7d4383b

131348539 has 16 divisors (see below), whose sum is σ = 158457600. Its totient is φ = 106359264.

The previous prime is 131348537. The next prime is 131348563. The reversal of 131348539 is 935843131.

It is not a de Polignac number, because 131348539 - 21 = 131348537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131348498 and 131348507.

It is not an unprimeable number, because it can be changed into a prime (131348537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54549 + ... + 56905.

It is an arithmetic number, because the mean of its divisors is an integer number (9903600).

Almost surely, 2131348539 is an apocalyptic number.

131348539 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

131348539 is a deficient number, since it is larger than the sum of its proper divisors (27109061).

131348539 is a wasteful number, since it uses less digits than its factorization.

131348539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2802.

The product of its digits is 38880, while the sum is 37.

The square root of 131348539 is about 11460.7390250367. The cubic root of 131348539 is about 508.3253271396.

The spelling of 131348539 in words is "one hundred thirty-one million, three hundred forty-eight thousand, five hundred thirty-nine".

Divisors: 1 7 19 133 419 2357 2933 7961 16499 44783 55727 313481 987583 6913081 18764077 131348539