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20313121314342 = 23313771181229681
BaseRepresentation
bin1001001111001100001000…
…11000010101011000100110
32122220220201100110100212010
410213212010120111120212
510130302233024024332
6111111415154335050
74164401040206103
oct447460430253046
978826640410763
1020313121314342
116521823468a7a
12234099b28a486
13b4469967b56c
14503235ca7aaa
152535ce45b9cc
hex127984615626

20313121314342 has 128 divisors (see below), whose sum is σ = 43918314725376. Its totient is φ = 6250970880000.

The previous prime is 20313121314323. The next prime is 20313121314347. The reversal of 20313121314342 is 24341312131302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20313121314347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 88325742 + ... + 88555422.

It is an arithmetic number, because the mean of its divisors is an integer number (343111833792).

Almost surely, 220313121314342 is an apocalyptic number.

20313121314342 is an abundant number, since it is smaller than the sum of its proper divisors (23605193411034).

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

20313121314342 is a wasteful number, since it uses less digits than its factorization.

20313121314342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230006.

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 20313121314342 its reverse (24341312131302), we get a palindrome (44654433445644).

The spelling of 20313121314342 in words is "twenty trillion, three hundred thirteen billion, one hundred twenty-one million, three hundred fourteen thousand, three hundred forty-two".

Divisors: 1 2 3 6 31 37 62 71 74 93 111 142 181 186 213 222 362 426 543 1086 1147 2201 2294 2627 3441 4402 5254 5611 6603 6697 6882 7881 11222 12851 13206 13394 15762 16833 20091 25702 33666 38553 40182 77106 81437 162874 207607 229681 244311 398381 415214 459362 475487 488622 622821 689043 796762 950974 1195143 1245642 1378086 1426461 2390286 2852922 7120111 8498197 14240222 14740097 16307351 16996394 21360333 25494591 29480194 32614702 41572261 42720666 44220291 48922053 50989182 83144522 88440582 97844106 124716783 249433566 263444107 505527881 526888214 603371987 790332321 1011055762 1206743974 1288740091 1516583643 1538173657 1580664642 1810115961 2577480182 2951630531 3033167286 3076347314 3620231922 3866220273 4614520971 5903261062 7732440546 8854891593 9229041942 17709783186 18704531597 37409063194 47683383367 56113594791 91500546461 95366766734 109210329647 112227189582 143050150101 183001092922 218420659294 274501639383 286100300202 327630988941 549003278766 655261977882 3385520219057 6771040438114 10156560657171 20313121314342