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12531834200 = 23521573171259
BaseRepresentation
bin10111010101111010…
…01001110101011000
31012100100212010201102
423222331021311120
5201131122143300
65431304410532
7622356555524
oct135275116530
935310763642
1012531834200
115350991576
122518a76a48
1312493b4712
1486c4dcd84
154d52c60d5
hex2eaf49d58

12531834200 has 96 divisors (see below), whose sum is σ = 29437959600. Its totient is φ = 4961149440.

The previous prime is 12531834191. The next prime is 12531834209. The reversal of 12531834200 is 243813521.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12531834191) and next prime (12531834209).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12531834209) 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 23 ways as a sum of consecutive naturals, for example, 9953171 + ... + 9954429.

Almost surely, 212531834200 is an apocalyptic number.

12531834200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12531834200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14718979800).

12531834200 is an abundant number, since it is smaller than the sum of its proper divisors (16906125400).

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

12531834200 is a wasteful number, since it uses less digits than its factorization.

12531834200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1749 (or 1740 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The spelling of 12531834200 in words is "twelve billion, five hundred thirty-one million, eight hundred thirty-four thousand, two hundred".

Divisors: 1 2 4 5 8 10 20 25 40 50 100 157 200 314 317 628 634 785 1256 1259 1268 1570 1585 2518 2536 3140 3170 3925 5036 6280 6295 6340 7850 7925 10072 12590 12680 15700 15850 25180 31400 31475 31700 49769 50360 62950 63400 99538 125900 197663 199076 248845 251800 395326 398152 399103 497690 790652 798206 988315 995380 1244225 1581304 1596412 1976630 1990760 1995515 2488450 3192824 3953260 3991030 4941575 4976900 7906520 7982060 9883150 9953800 9977575 15964120 19766300 19955150 39532600 39910300 62659171 79820600 125318342 250636684 313295855 501273368 626591710 1253183420 1566479275 2506366840 3132958550 6265917100 12531834200