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23012031300 = 223521723196181
BaseRepresentation
bin10101011011100111…
…111011101101000100
32012101202012022102120
4111123213323231010
5334112040000200
614323243405540
71443155016156
oct253347735504
965352168376
1023012031300
119839767795
1245628238b0
13222971248b
141184340ad6
158ea3d99a0
hex55b9fbb44

23012031300 has 144 divisors (see below), whose sum is σ = 73563541632. Its totient is φ = 5524428800.

The previous prime is 23012031281. The next prime is 23012031313. The reversal of 23012031300 is 313021032.

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

It is a self number, because there is not a number n which added to its sum of digits gives 23012031300.

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, 19210 + ... + 215390.

It is an arithmetic number, because the mean of its divisors is an integer number (510857928).

Almost surely, 223012031300 is an apocalyptic number.

23012031300 is a gapful number since it is divisible by the number (20) 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 23012031300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36781770816).

23012031300 is an abundant number, since it is smaller than the sum of its proper divisors (50551510332).

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

23012031300 is a wasteful number, since it uses less digits than its factorization.

23012031300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196238 (or 196231 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 23012031300 its reverse (313021032), we get a palindrome (23325052332).

The spelling of 23012031300 in words is "twenty-three billion, twelve million, thirty-one thousand, three hundred".

Divisors: 1 2 3 4 5 6 10 12 15 17 20 23 25 30 34 46 50 51 60 68 69 75 85 92 100 102 115 138 150 170 204 230 255 276 300 340 345 391 425 460 510 575 690 782 850 1020 1150 1173 1275 1380 1564 1700 1725 1955 2300 2346 2550 3450 3910 4692 5100 5865 6900 7820 9775 11730 19550 23460 29325 39100 58650 117300 196181 392362 588543 784724 980905 1177086 1961810 2354172 2942715 3335077 3923620 4512163 4904525 5885430 6670154 9024326 9809050 10005231 11770860 13340308 13536489 14713575 16675385 18048652 19618100 20010462 22560815 27072978 29427150 33350770 40020924 45121630 50026155 54145956 58854300 66701540 67682445 76706771 83376925 90243260 100052310 112804075 135364890 153413542 166753850 200104620 225608150 230120313 250130775 270729780 306827084 333507700 338412225 383533855 451216300 460240626 500261550 676824450 767067710 920481252 1000523100 1150601565 1353648900 1534135420 1917669275 2301203130 3835338550 4602406260 5753007825 7670677100 11506015650 23012031300