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12312323032020 = 22351135879519943
BaseRepresentation
bin1011001100101010111110…
…1001000000001111010100
31121121001020221222000111220
42303022233221000033110
53103211114144011040
642104111512330340
72410351561666044
oct263125751001724
947531227860456
1012312323032020
113a17699408490
12146a2640a39b0
136b407c5862cb
14307cc35c9724
151654123ad2d0
hexb32afa403d4

12312323032020 has 96 divisors (see below), whose sum is σ = 37609670891520. Its totient is φ = 2984716652160.

The previous prime is 12312323032007. The next prime is 12312323032027. The reversal of 12312323032020 is 2023032321321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12312323032027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23420169 + ... + 23940111.

It is an arithmetic number, because the mean of its divisors is an integer number (391767405120).

Almost surely, 212312323032020 is an apocalyptic number.

12312323032020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12312323032020 is an abundant number, since it is smaller than the sum of its proper divisors (25297347859500).

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

12312323032020 is a wasteful number, since it uses less digits than its factorization.

12312323032020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555845 (or 555843 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 12312323032020 its reverse (2023032321321), we get a palindrome (14335355353341).

The spelling of 12312323032020 in words is "twelve trillion, three hundred twelve billion, three hundred twenty-three million, thirty-two thousand, twenty".

Divisors: 1 2 3 4 5 6 10 11 12 15 20 22 30 33 44 55 60 66 110 132 165 220 330 660 35879 71758 107637 143516 179395 215274 358790 394669 430548 519943 538185 717580 789338 1039886 1076370 1184007 1559829 1578676 1973345 2079772 2152740 2368014 2599715 3119658 3946690 4736028 5199430 5719373 5920035 6239316 7799145 7893380 10398860 11438746 11840070 15598290 17158119 22877492 23680140 28596865 31196580 34316238 57193730 68632476 85790595 114387460 171581190 343162380 18655034897 37310069794 55965104691 74620139588 93275174485 111930209382 186550348970 205205383867 223860418764 279825523455 373100697940 410410767734 559651046910 615616151601 820821535468 1026026919335 1119302093820 1231232303202 2052053838670 2462464606404 3078080758005 4104107677340 6156161516010 12312323032020