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20122312031310 = 23530711171955983
BaseRepresentation
bin1001001001101000101110…
…10000101011110001001110
32122020200012112010110212110
410210310113100223301032
510114140443340000220
6110444021301244450
74144534436105226
oct444642720536116
978220175113773
1020122312031310
116458908610535
12230ba09703726
13b2c6ab496568
144d7cd4685086
1524d662cd7be0
hex124d1742bc4e

20122312031310 has 64 divisors (see below), whose sum is σ = 48494257523712. Its totient is φ = 5343680232576.

The previous prime is 20122312031309. The next prime is 20122312031323. The reversal of 20122312031310 is 1313021322102.

It is a super-2 number, since 2×201223120313102 (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9309579 + ... + 11265561.

It is an arithmetic number, because the mean of its divisors is an integer number (757722773808).

Almost surely, 220122312031310 is an apocalyptic number.

20122312031310 is an abundant number, since it is smaller than the sum of its proper divisors (28371945492402).

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

20122312031310 is a wasteful number, since it uses less digits than its factorization.

20122312031310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1957417.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 20122312031310 its reverse (1313021322102), we get a palindrome (21435333353412).

The spelling of 20122312031310 in words is "twenty trillion, one hundred twenty-two billion, three hundred twelve million, thirty-one thousand, three hundred ten".

Divisors: 1 2 3 5 6 10 15 30 307 614 921 1117 1535 1842 2234 3070 3351 4605 5585 6702 9210 11170 16755 33510 342919 685838 1028757 1714595 1955983 2057514 3429190 3911966 5143785 5867949 9779915 10287570 11735898 19559830 29339745 58679490 600486781 1200973562 1801460343 2184833011 3002433905 3602920686 4369666022 6004867810 6554499033 9007301715 10924165055 13108998066 18014603430 21848330110 32772495165 65544990330 670743734377 1341487468754 2012231203131 3353718671885 4024462406262 6707437343770 10061156015655 20122312031310