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23311121330 = 2572296126893
BaseRepresentation
bin10101101101011100…
…110111101110110010
32020011120222122211002
4111231130313232302
5340220121340310
614413050122002
71453446155600
oct255534675662
966146878732
1023311121330
11998257a532
124626a20302
132276682023
1411b1d58870
159167b8da5
hex56d737bb2

23311121330 has 96 divisors (see below), whose sum is σ = 51323433840. Its totient is φ = 7589998080.

The previous prime is 23311121297. The next prime is 23311121333. The reversal of 23311121330 is 3312111332.

It can be written as a sum of positive squares in 8 ways, for example, as 9842822521 + 13468298809 = 99211^2 + 116053^2 .

It is not an unprimeable number, because it can be changed into a prime (23311121333) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 853364 + ... + 880256.

Almost surely, 223311121330 is an apocalyptic number.

23311121330 is an abundant number, since it is smaller than the sum of its proper divisors (28012312510).

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

23311121330 is a wasteful number, since it uses less digits than its factorization.

23311121330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27004 (or 26997 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 23311121330 its reverse (3312111332), we get a palindrome (26623232662).

The spelling of 23311121330 in words is "twenty-three billion, three hundred eleven million, one hundred twenty-one thousand, three hundred thirty".

Divisors: 1 2 5 7 10 14 29 35 49 58 61 70 98 122 145 203 245 290 305 406 427 490 610 854 1015 1421 1769 2030 2135 2842 2989 3538 4270 5978 7105 8845 12383 14210 14945 17690 24766 26893 29890 53786 61915 86681 123830 134465 173362 188251 268930 376502 433405 779897 866810 941255 1317757 1559794 1640473 1882510 2635514 3280946 3899485 5459279 6588785 7798970 8202365 10918558 11483311 13177570 16404730 22966622 27296395 38214953 47573717 54592790 57416555 76429906 80383177 95147434 114833110 160766354 191074765 237868585 333016019 382149530 401915885 475737170 666032038 803831770 1665080095 2331112133 3330160190 4662224266 11655560665 23311121330