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12131303241 = 3172311938669
BaseRepresentation
bin10110100110001010…
…01111111101001001
31011022110012001112110
423103011033331021
5144321103200431
65323435532533
7606424243011
oct132305177511
934273161473
1012131303241
115165893752
1224268ba149
1311b4418555
1483123ac41
154b005a346
hex2d314ff49

12131303241 has 32 divisors (see below), whose sum is σ = 17888221440. Its totient is φ = 7273908224.

The previous prime is 12131303227. The next prime is 12131303251. The reversal of 12131303241 is 14230313121.

It is a cyclic number.

It is not a de Polignac number, because 12131303241 - 223 = 12122914633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12131303221) 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 31 ways as a sum of consecutive naturals, for example, 1395055 + ... + 1403723.

It is an arithmetic number, because the mean of its divisors is an integer number (559006920).

Almost surely, 212131303241 is an apocalyptic number.

It is an amenable number.

12131303241 is a deficient number, since it is larger than the sum of its proper divisors (5756918199).

12131303241 is a wasteful number, since it uses less digits than its factorization.

12131303241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9905.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 12131303241 its reverse (14230313121), we get a palindrome (26361616362).

The spelling of 12131303241 in words is "twelve billion, one hundred thirty-one million, three hundred three thousand, two hundred forty-one".

Divisors: 1 3 17 23 51 69 391 1173 1193 3579 8669 20281 26007 27439 60843 82317 147373 199387 442119 466463 598161 1399389 3389579 10168737 10342117 31026351 175815989 237868691 527447967 713606073 4043767747 12131303241