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131788741 = 734915393
BaseRepresentation
bin1111101101011…
…10111111000101
3100011222120011111
413312232333011
5232214214431
621024405021
73160120510
oct766567705
9304876144
10131788741
1168433917
1238176771
13213c3a06
1413707d77
15b8837b1
hex7daefc5

131788741 has 8 divisors (see below), whose sum is σ = 150686784. Its totient is φ = 112908480.

The previous prime is 131788721. The next prime is 131788747. The reversal of 131788741 is 147887131.

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 131788741 - 211 = 131786693 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131788694 and 131788703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131788747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21741 + ... + 27133.

It is an arithmetic number, because the mean of its divisors is an integer number (18835848).

Almost surely, 2131788741 is an apocalyptic number.

It is an amenable number.

131788741 is a deficient number, since it is larger than the sum of its proper divisors (18898043).

131788741 is an equidigital number, since it uses as much as digits as its factorization.

131788741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8891.

The product of its digits is 37632, while the sum is 40.

The square root of 131788741 is about 11479.9277436750. The cubic root of 131788741 is about 508.8925617537.

The spelling of 131788741 in words is "one hundred thirty-one million, seven hundred eighty-eight thousand, seven hundred forty-one".

Divisors: 1 7 3491 5393 24437 37751 18826963 131788741