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13111100101230 = 235372491650179
BaseRepresentation
bin1011111011001010101001…
…1101101101001001101110
31201102102001002221102211120
42332302222131231021232
53204303013111214410
643515053425201410
72522150166026145
oct276625235551156
951372032842746
1013111100101230
1141a542822417a
121579028a90266
137414aa0700a1
1433481b37275c
1517b0b3135570
hexbecaa76d26e

13111100101230 has 96 divisors (see below), whose sum is σ = 32405990682240. Its totient is φ = 3394865416320.

The previous prime is 13111100101223. The next prime is 13111100101289. The reversal of 13111100101230 is 3210100111131.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19840281 + ... + 20490459.

It is an arithmetic number, because the mean of its divisors is an integer number (337562402940).

Almost surely, 213111100101230 is an apocalyptic number.

13111100101230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13111100101230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16202995341120).

13111100101230 is an abundant number, since it is smaller than the sum of its proper divisors (19294890581010).

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

13111100101230 is a wasteful number, since it uses less digits than its factorization.

13111100101230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650754 (or 650717 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 15.

Adding to 13111100101230 its reverse (3210100111131), we get a palindrome (16321200212361).

Subtracting from 13111100101230 its reverse (3210100111131), we obtain a palindrome (9900999990099).

The spelling of 13111100101230 in words is "thirteen trillion, one hundred eleven billion, one hundred million, one hundred one thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 37 74 111 185 222 370 491 555 982 1110 1369 1473 2455 2738 2946 4107 4910 6845 7365 8214 13690 14730 18167 20535 36334 41070 54501 90835 109002 181670 272505 545010 650179 672179 1300358 1344358 1950537 2016537 3250895 3360895 3901074 4033074 6501790 6721790 9752685 10082685 19505370 20165370 24056623 48113246 72169869 120283115 144339738 240566230 319237889 360849345 638475778 721698690 890095051 957713667 1596189445 1780190102 1915427334 2670285153 3192378890 4450475255 4788568335 5340570306 8900950510 9577136670 11811801893 13351425765 23623603786 26702851530 35435405679 59059009465 70870811358 118118018930 177177028395 354354056790 437036670041 874073340082 1311110010123 2185183350205 2622220020246 4370366700410 6555550050615 13111100101230