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12131113523790 = 235431938214503
BaseRepresentation
bin1011000010000111111010…
…1101100101101001001110
31120221201112011022012220010
42300201332231211221032
53042224010030230130
641444542343534050
72361305205406632
oct260417655455116
946851464265803
1012131113523790
11395785a365928
12143b11145a326
1369cc6119b821
142dd212d06dc2
151608588dc0b0
hexb087eb65a4e

12131113523790 has 32 divisors (see below), whose sum is σ = 29182223932416. Its totient is φ = 3227457886880.

The previous prime is 12131113523779. The next prime is 12131113523791. The reversal of 12131113523790 is 9732531113121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12131113523791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 469094322 + ... + 469120181.

It is an arithmetic number, because the mean of its divisors is an integer number (911944497888).

Almost surely, 212131113523790 is an apocalyptic number.

12131113523790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12131113523790 is an abundant number, since it is smaller than the sum of its proper divisors (17051110408626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12131113523790 is a wasteful number, since it uses less digits than its factorization.

12131113523790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938214944.

The product of its (nonzero) digits is 34020, while the sum is 39.

The spelling of 12131113523790 in words is "twelve trillion, one hundred thirty-one billion, one hundred thirteen million, five hundred twenty-three thousand, seven hundred ninety".

Divisors: 1 2 3 5 6 10 15 30 431 862 1293 2155 2586 4310 6465 12930 938214503 1876429006 2814643509 4691072515 5629287018 9382145030 14073217545 28146435090 404370450793 808740901586 1213111352379 2021852253965 2426222704758 4043704507930 6065556761895 12131113523790