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20431240124310 = 2325438363607111
BaseRepresentation
bin1001010010101000001001…
…10011110101011110010110
32200100012121020211121202200
410221110010303311132112
510134221134432434220
6111241552050345330
74206052114423341
oct451240463653626
980305536747680
1020431240124310
116567927455194
12235b864b8b246
13b52871bb9922
14508c3d441458
152566e41bc890
hex129504cf5796

20431240124310 has 96 divisors (see below), whose sum is σ = 55011501312768. Its totient is φ = 5257509284160.

The previous prime is 20431240124303. The next prime is 20431240124311. The reversal of 20431240124310 is 1342104213402.

20431240124310 is a `hidden beast` number, since 2 + 0 + 4 + 3 + 1 + 2 + 401 + 243 + 10 = 666.

It is a super-2 number, since 2×204312401243102 (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20431240124311) 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, 31482346 + ... + 32124765.

It is an arithmetic number, because the mean of its divisors is an integer number (573036472008).

Almost surely, 220431240124310 is an apocalyptic number.

20431240124310 is an abundant number, since it is smaller than the sum of its proper divisors (34580261188458).

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

20431240124310 is a wasteful number, since it uses less digits than its factorization.

20431240124310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63607250 (or 63607247 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 20431240124310 its reverse (1342104213402), we get a palindrome (21773344337712).

The spelling of 20431240124310 in words is "twenty trillion, four hundred thirty-one billion, two hundred forty million, one hundred twenty-four thousand, three hundred ten".

Divisors: 1 2 3 5 6 9 10 15 18 30 43 45 83 86 90 129 166 215 249 258 387 415 430 498 645 747 774 830 1245 1290 1494 1935 2490 3569 3735 3870 7138 7470 10707 17845 21414 32121 35690 53535 64242 107070 160605 321210 63607111 127214222 190821333 318035555 381642666 572463999 636071110 954106665 1144927998 1908213330 2735105773 2862319995 5279390213 5470211546 5724639990 8205317319 10558780426 13675528865 15838170639 16410634638 24615951957 26396951065 27351057730 31676341278 41026586595 47514511917 49231903914 52793902130 79190853195 82053173190 95029023834 123079759785 158381706390 227013779159 237572559585 246159519570 454027558318 475145119170 681041337477 1135068895795 1362082674954 2043124012431 2270137791590 3405206687385 4086248024862 6810413374770 10215620062155 20431240124310