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12310203131000 = 235325919474949
BaseRepresentation
bin1011001100100011000101…
…0010001110010001111000
31121120211210012222220000022
42303020301102032101320
53103142244000143000
642103121303430012
72410245211064435
oct263106122162170
947524705886008
1012310203131000
113a16800817475
121469972155308
136b3b0231b0c8
14307b61c3cb8c
1516533b214585
hexb323148e478

12310203131000 has 64 divisors (see below), whose sum is σ = 28807047360000. Its totient is φ = 4923880905600.

The previous prime is 12310203130999. The next prime is 12310203131027. The reversal of 12310203131000 is 13130201321.

It is a super-2 number, since 2×123102031310002 (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12310203131000.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 25681526 + ... + 26156474.

It is an arithmetic number, because the mean of its divisors is an integer number (450110115000).

Almost surely, 212310203131000 is an apocalyptic number.

12310203131000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12310203131000 is an abundant number, since it is smaller than the sum of its proper divisors (16496844229000).

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

12310203131000 is a wasteful number, since it uses less digits than its factorization.

12310203131000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500889 (or 500875 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 12310203131000 its reverse (13130201321), we get a palindrome (12323333332321).

The spelling of 12310203131000 in words is "twelve trillion, three hundred ten billion, two hundred three million, one hundred thirty-one thousand".

Divisors: 1 2 4 5 8 10 20 25 40 50 100 125 200 250 500 1000 25919 51838 103676 129595 207352 259190 474949 518380 647975 949898 1036760 1295950 1899796 2374745 2591900 3239875 3799592 4749490 5183800 6479750 9498980 11873725 12959500 18997960 23747450 25919000 47494900 59368625 94989800 118737250 237474500 474949000 12310203131 24620406262 49240812524 61551015655 98481625048 123102031310 246204062620 307755078275 492408125240 615510156550 1231020313100 1538775391375 2462040626200 3077550782750 6155101565500 12310203131000