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131047126 = 279360509
BaseRepresentation
bin1111100111110…
…01111011010110
3100010120212212021
413303321323112
5232022002001
621000443354
73150611410
oct763717326
9303525767
10131047126
1167a77711
1237a7955a
13211c42a2
14135939b0
15b788ba1
hex7cf9ed6

131047126 has 8 divisors (see below), whose sum is σ = 224652240. Its totient is φ = 56163048.

The previous prime is 131047099. The next prime is 131047129. The reversal of 131047126 is 621740131.

131047126 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 131047126.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131047129) 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 3 ways as a sum of consecutive naturals, for example, 4680241 + ... + 4680268.

It is an arithmetic number, because the mean of its divisors is an integer number (28081530).

Almost surely, 2131047126 is an apocalyptic number.

131047126 is a deficient number, since it is larger than the sum of its proper divisors (93605114).

131047126 is an equidigital number, since it uses as much as digits as its factorization.

131047126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9360518.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 131047126 is about 11447.5816660114. The cubic root of 131047126 is about 507.9362016105.

Adding to 131047126 its reverse (621740131), we get a palindrome (752787257).

The spelling of 131047126 in words is "one hundred thirty-one million, forty-seven thousand, one hundred twenty-six".

Divisors: 1 2 7 14 9360509 18721018 65523563 131047126