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22131301230 = 2325738234093
BaseRepresentation
bin10100100111001000…
…001101101101101110
32010010100221120220100
4110213020031231232
5330311103114410
614100022331530
71412301646053
oct244710155556
963110846810
1022131301230
1194275a71a5
124357889ba6
132119104b1c
1410dd39d02a
15897e178c0
hex52720db6e

22131301230 has 96 divisors (see below), whose sum is σ = 58414764096. Its totient is φ = 5812342272.

The previous prime is 22131301223. The next prime is 22131301277. The reversal of 22131301230 is 3210313122.

22131301230 is a `hidden beast` number, since 2 + 2 + 131 + 301 + 230 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

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, 5405064 + ... + 5409156.

It is an arithmetic number, because the mean of its divisors is an integer number (608487126).

Almost surely, 222131301230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22131301230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29207382048).

22131301230 is an abundant number, since it is smaller than the sum of its proper divisors (36283462866).

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

22131301230 is a wasteful number, since it uses less digits than its factorization.

22131301230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5002 (or 4999 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 22131301230 its reverse (3210313122), we get a palindrome (25341614352).

The spelling of 22131301230 in words is "twenty-two billion, one hundred thirty-one million, three hundred one thousand, two hundred thirty".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 73 90 146 219 365 438 657 730 823 1095 1314 1646 2190 2469 3285 4093 4115 4938 6570 7407 8186 8230 12279 12345 14814 20465 24558 24690 36837 37035 40930 60079 61395 73674 74070 120158 122790 180237 184185 298789 300395 360474 368370 540711 597578 600790 896367 901185 1081422 1493945 1792734 1802370 2689101 2703555 2987890 3368539 4481835 5378202 5407110 6737078 8963670 10105617 13445505 16842695 20211234 26891010 30316851 33685390 50528085 60633702 101056170 151584255 245903347 303168510 491806694 737710041 1229516735 1475420082 2213130123 2459033470 3688550205 4426260246 7377100410 11065650615 22131301230