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20343231530120 = 23510710181466859
BaseRepresentation
bin1001010000000100001110…
…00101101100010010001000
32200000210102210010210212002
410220002013011230102020
510131300414232430440
6111133315045010132
74166515145625542
oct450020705542210
980023383123762
1020343231530120
116533574940824
1223467a30b3948
13b47487822ca5
14504890c02692
15254292aa7115
hex12808716c488

20343231530120 has 64 divisors (see below), whose sum is σ = 46204686014400. Its totient is φ = 8060434090240.

The previous prime is 20343231530101. The next prime is 20343231530143. The reversal of 20343231530120 is 2103513234302.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43341251 + ... + 43808109.

It is an arithmetic number, because the mean of its divisors is an integer number (721948218975).

Almost surely, 220343231530120 is an apocalyptic number.

20343231530120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20343231530120 is an abundant number, since it is smaller than the sum of its proper divisors (25861454484280).

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

20343231530120 is a wasteful number, since it uses less digits than its factorization.

20343231530120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477158 (or 477154 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 29.

Adding to 20343231530120 its reverse (2103513234302), we get a palindrome (22446744764422).

The spelling of 20343231530120 in words is "twenty trillion, three hundred forty-three billion, two hundred thirty-one million, five hundred thirty thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 20 40 107 214 428 535 856 1070 2140 4280 10181 20362 40724 50905 81448 101810 203620 407240 466859 933718 1089367 1867436 2178734 2334295 3734872 4357468 4668590 5446835 8714936 9337180 10893670 18674360 21787340 43574680 49953913 99907826 199815652 249769565 399631304 499539130 999078260 1998156520 4753091479 9506182958 19012365916 23765457395 38024731832 47530914790 95061829580 190123659160 508580788253 1017161576506 2034323153012 2542903941265 4068646306024 5085807882530 10171615765060 20343231530120