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12231186423 = 347384722549
BaseRepresentation
bin10110110010000100…
…10001011111110111
31011120102010122111120
423121002101133313
5200022140431143
65341404435023
7612046240431
oct133102213767
934512118446
1012231186423
115207205435
122454248a73
1311cc01ab21
148405db651
154b8bda383
hex2d90917f7

12231186423 has 16 divisors (see below), whose sum is σ = 16660300800. Its totient is φ = 7978203936.

The previous prime is 12231186397. The next prime is 12231186437. The reversal of 12231186423 is 32468113221.

It is not a de Polignac number, because 12231186423 - 213 = 12231178231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12231186223) 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 15 ways as a sum of consecutive naturals, for example, 531153 + ... + 553701.

It is an arithmetic number, because the mean of its divisors is an integer number (1041268800).

Almost surely, 212231186423 is an apocalyptic number.

12231186423 is a deficient number, since it is larger than the sum of its proper divisors (4429114377).

12231186423 is a wasteful number, since it uses less digits than its factorization.

12231186423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26446.

The product of its digits is 13824, while the sum is 33.

Adding to 12231186423 its reverse (32468113221), we get a palindrome (44699299644).

The spelling of 12231186423 in words is "twelve billion, two hundred thirty-one million, one hundred eighty-six thousand, four hundred twenty-three".

Divisors: 1 3 47 141 3847 11541 22549 67647 180809 542427 1059803 3179409 86746003 260238009 4077062141 12231186423