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13030312212 = 22373148049
BaseRepresentation
bin11000010001010101…
…01100100100010100
31020122002211110000000
430020222230210110
5203141224442322
65552552451300
7640621553301
oct141052544424
936562743000
1013030312212
1155872a9475
1226379a9b30
1312c8755b18
148b87ba0a8
15513e3d3ac
hex308aac914

13030312212 has 96 divisors (see below), whose sum is σ = 35303296000. Its totient is φ = 4203239040.

The previous prime is 13030312187. The next prime is 13030312223. The reversal of 13030312212 is 21221303031.

It is a super-3 number, since 3×130303122123 (a number of 31 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 247164 + ... + 295212.

Almost surely, 213030312212 is an apocalyptic number.

13030312212 is a gapful number since it is divisible by the number (12) 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 13030312212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17651648000).

13030312212 is an abundant number, since it is smaller than the sum of its proper divisors (22272983788).

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

13030312212 is an equidigital number, since it uses as much as digits as its factorization.

13030312212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48105 (or 48085 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 13030312212 its reverse (21221303031), we get a palindrome (34251615243).

The spelling of 13030312212 in words is "thirteen billion, thirty million, three hundred twelve thousand, two hundred twelve".

Divisors: 1 2 3 4 6 9 12 18 27 31 36 54 62 81 93 108 124 162 186 243 279 324 372 486 558 729 837 972 1116 1458 1674 2187 2511 2916 3348 4374 5022 7533 8748 10044 15066 22599 30132 45198 48049 67797 90396 96098 135594 144147 192196 271188 288294 432441 576588 864882 1297323 1489519 1729764 2594646 2979038 3891969 4468557 5189292 5958076 7783938 8937114 11675907 13405671 15567876 17874228 23351814 26811342 35027721 40217013 46703628 53622684 70055442 80434026 105083163 120651039 140110884 160868052 210166326 241302078 361953117 420332652 482604156 723906234 1085859351 1447812468 2171718702 3257578053 4343437404 6515156106 13030312212