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13123130312300 = 22521771158368683
BaseRepresentation
bin1011111011110111011110…
…0001010100011001101100
31201110120002111220110222112
42332331313201110121230
53210002132324443200
643524403254303152
72523054255110621
oct276756741243154
951416074813875
1013123130312300
1141aa540a3a878
12157b425957ab8
13742676551988
1433523cdb6348
1517b569372535
hexbef7785466c

13123130312300 has 144 divisors (see below), whose sum is σ = 30596763681792. Its totient is φ = 4867740595200.

The previous prime is 13123130312293. The next prime is 13123130312309. The reversal of 13123130312300 is 321303132131.

It is not an unprimeable number, because it can be changed into a prime (13123130312309) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 191033759 + ... + 191102441.

It is an arithmetic number, because the mean of its divisors is an integer number (212477525568).

Almost surely, 213123130312300 is an apocalyptic number.

13123130312300 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 13123130312300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15298381840896).

13123130312300 is an abundant number, since it is smaller than the sum of its proper divisors (17473633369492).

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

13123130312300 is a wasteful number, since it uses less digits than its factorization.

13123130312300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70368 (or 70361 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 13123130312300 its reverse (321303132131), we get a palindrome (13444433444431).

The spelling of 13123130312300 in words is "thirteen trillion, one hundred twenty-three billion, one hundred thirty million, three hundred twelve thousand, three hundred".

Divisors: 1 2 4 5 10 17 20 25 34 50 68 71 85 100 142 170 284 340 355 425 710 850 1207 1420 1583 1700 1775 2414 3166 3550 4828 6035 6332 7100 7915 12070 15830 24140 26911 30175 31660 39575 53822 60350 68683 79150 107644 112393 120700 134555 137366 158300 224786 269110 274732 343415 449572 538220 561965 672775 686830 1123930 1167611 1345550 1373660 1717075 1910681 2247860 2335222 2691100 2809825 3434150 3821362 4670444 4876493 5619650 5838055 6868300 7642724 9553405 9752986 11239300 11676110 19106810 19505972 23352220 24382465 29190275 38213620 47767025 48764930 58380550 82900381 95534050 97529860 108725189 116761100 121912325 165800762 191068100 217450378 243824650 331601524 414501905 434900756 487649300 543625945 829003810 1087251890 1658007620 1848328213 2072509525 2174503780 2718129725 3696656426 4145019050 5436259450 7393312852 7719488419 8290038100 9241641065 10872518900 15438976838 18483282130 30877953676 36966564260 38597442095 46208205325 77194884190 92416410650 131231303123 154389768380 184832821300 192987210475 262462606246 385974420950 524925212492 656156515615 771948841900 1312313031230 2624626062460 3280782578075 6561565156150 13123130312300