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20210120131302 = 2342313739591821
BaseRepresentation
bin1001001100001100010010…
…00010000000001011100110
32122120001212000120010110000
410212012021002000023212
510122110311223200202
6110552222341442130
74154063421456603
oct446061102001346
978501760503400
1020210120131302
116492077a34712
122324a34410346
13b37a63161c8a
144dc2644136aa
15250aa19e791c
hex1261890802e6

20210120131302 has 80 divisors (see below), whose sum is σ = 47599505550432. Its totient is φ = 6396771173760.

The previous prime is 20210120131211. The next prime is 20210120131309. The reversal of 20210120131302 is 20313102101202.

20210120131302 is a `hidden beast` number, since 2 + 0 + 210 + 1 + 20 + 131 + 302 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20210120131309) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 19285449 + ... + 20306372.

Almost surely, 220210120131302 is an apocalyptic number.

20210120131302 is an abundant number, since it is smaller than the sum of its proper divisors (27389385419130).

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

20210120131302 is a wasteful number, since it uses less digits than its factorization.

20210120131302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39591995 (or 39591986 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 20210120131302 its reverse (20313102101202), we get a palindrome (40523222232504).

The spelling of 20210120131302 in words is "twenty trillion, two hundred ten billion, one hundred twenty million, one hundred thirty-one thousand, three hundred two".

Divisors: 1 2 3 6 9 18 23 27 46 54 69 81 137 138 162 207 274 411 414 621 822 1233 1242 1863 2466 3151 3699 3726 6302 7398 9453 11097 18906 22194 28359 56718 85077 170154 255231 510462 39591821 79183642 118775463 237550926 356326389 712652778 910611883 1068979167 1821223766 2137958334 2731835649 3206937501 5424079477 5463671298 6413875002 8195506947 10848158954 16272238431 16391013894 24586520841 32544476862 48816715293 49173041682 73759562523 97633430586 124753827971 146450145879 147519125046 249507655942 292900291758 374261483913 439350437637 748522967826 878700875274 1122784451739 2245568903478 3368353355217 6736706710434 10105060065651 20210120131302