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20331443104310 = 25131797487194749
BaseRepresentation
bin1001001111101110010000…
…11100011010101000110110
32122222200000020010201201202
410213313020130122220312
510131102243413314220
6111124045214052502
74165620053643302
oct447671034325066
978880006121652
1020331443104310
116529575657a58
1223444531aa132
13b463294689c0
1450409333ad02
15253d02bca275
hex127dc871aa36

20331443104310 has 128 divisors (see below), whose sum is σ = 42247052064000. Its totient is φ = 6978172944384.

The previous prime is 20331443104307. The next prime is 20331443104459. The reversal of 20331443104310 is 1340134413302.

It is a happy number.

It is a super-2 number, since 2×203314431043102 (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 104300816 + ... + 104495564.

It is an arithmetic number, because the mean of its divisors is an integer number (330055094250).

Almost surely, 220331443104310 is an apocalyptic number.

20331443104310 is an abundant number, since it is smaller than the sum of its proper divisors (21915608959690).

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

20331443104310 is a wasteful number, since it uses less digits than its factorization.

20331443104310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195370.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 20331443104310 its reverse (1340134413302), we get a palindrome (21671577517612).

The spelling of 20331443104310 in words is "twenty trillion, three hundred thirty-one billion, four hundred forty-three million, one hundred four thousand, three hundred ten".

Divisors: 1 2 5 10 13 17 26 34 65 85 97 130 170 194 221 442 485 487 970 974 1105 1261 1649 2210 2435 2522 3298 4870 6305 6331 8245 8279 12610 12662 16490 16558 21437 31655 41395 42874 47239 63310 82790 94478 107185 107627 194749 214370 215254 236195 389498 472390 538135 614107 803063 973745 1076270 1228214 1606126 1947490 2531737 3070535 3310733 4015315 5063474 6141070 6621466 8030630 10439819 12658685 16553665 18890653 20879638 25317370 33107330 37781306 43039529 52199095 86079058 94453265 94842763 104398190 188906530 189685526 215197645 245578489 321141101 430395290 474213815 491156978 642282202 948427630 1227892445 1232955919 1605705505 1612326971 2455784890 2465911838 3211411010 3224653942 4174834313 6164779595 8061634855 8349668626 9199748011 12329559190 16123269710 18399496022 20874171565 20960250623 41748343130 41920501246 45998740055 91997480110 104801253115 119596724143 156395716187 209602506230 239193448286 312791432374 597983620715 781978580935 1195967241430 1563957161870 2033144310431 4066288620862 10165721552155 20331443104310