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143252231430 = 23571185372701
BaseRepresentation
bin1000010101101001111…
…1111001010100000110
3111200202111100100120010
42011122133321110012
54321340032401210
6145450440251050
713230631606410
oct2053237712406
9450674310503
10143252231430
1155831171810
122391aa70a86
131067c5ba7a9
146d0d5319b0
153ad64da920
hex215a7f9506

143252231430 has 128 divisors (see below), whose sum is σ = 429148855296. Its totient is φ = 29731392000.

The previous prime is 143252231429. The next prime is 143252231461. The reversal of 143252231430 is 34132252341.

143252231430 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 1934080 + ... + 2006780.

It is an arithmetic number, because the mean of its divisors is an integer number (3352725432).

Almost surely, 2143252231430 is an apocalyptic number.

143252231430 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 143252231430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214574427648).

143252231430 is an abundant number, since it is smaller than the sum of its proper divisors (285896623866).

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

143252231430 is a wasteful number, since it uses less digits than its factorization.

143252231430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73582.

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 143252231430 its reverse (34132252341), we get a palindrome (177384483771).

The spelling of 143252231430 in words is "one hundred forty-three billion, two hundred fifty-two million, two hundred thirty-one thousand, four hundred thirty".

Divisors: 1 2 3 5 6 7 10 11 14 15 21 22 30 33 35 42 55 66 70 77 105 110 154 165 210 231 330 385 462 770 853 1155 1706 2310 2559 4265 5118 5971 8530 9383 11942 12795 17913 18766 25590 28149 29855 35826 46915 56298 59710 65681 72701 89565 93830 131362 140745 145402 179130 197043 218103 281490 328405 363505 394086 436206 508907 656810 727010 799711 985215 1017814 1090515 1526721 1599422 1970430 2181030 2399133 2544535 3053442 3998555 4798266 5089070 5597977 7633605 7997110 11195954 11995665 15267210 16793931 23991330 27989885 33587862 55979770 62013953 83969655 124027906 167939310 186041859 310069765 372083718 434097671 620139530 682153483 868195342 930209295 1302293013 1364306966 1860418590 2046460449 2170488355 2604586026 3410767415 4092920898 4340976710 4775074381 6511465065 6821534830 9550148762 10232302245 13022930130 14325223143 20464604490 23875371905 28650446286 47750743810 71626115715 143252231430