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12131324300 = 2252121313243
BaseRepresentation
bin10110100110001010…
…10101000110001100
31011022110020010102102
423103011111012030
5144321104334200
65323440214232
7606424361264
oct132305250614
934273203372
1012131324300
1151658a8557
12242690a378
1311b4425004
148312447a4
154b00616d5
hex2d315518c

12131324300 has 18 divisors (see below), whose sum is σ = 26324973948. Its totient is φ = 4852529680.

The previous prime is 12131324297. The next prime is 12131324339. The reversal of 12131324300 is 342313121.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 60656522 + ... + 60656721.

Almost surely, 212131324300 is an apocalyptic number.

12131324300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12131324300 is an abundant number, since it is smaller than the sum of its proper divisors (14193649648).

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

12131324300 is a wasteful number, since it uses less digits than its factorization.

12131324300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121313257 (or 121313250 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 12131324300 its reverse (342313121), we get a palindrome (12473637421).

The spelling of 12131324300 in words is "twelve billion, one hundred thirty-one million, three hundred twenty-four thousand, three hundred".

Divisors: 1 2 4 5 10 20 25 50 100 121313243 242626486 485252972 606566215 1213132430 2426264860 3032831075 6065662150 12131324300