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12331012313020 = 2251489787752567
BaseRepresentation
bin1011001101110000100110…
…0110111100111110111100
31121122211111110010212022111
42303130021212330332330
53104012403123004040
642120442220423404
72411612660156542
oct263341146747674
947584443125274
1012331012313020
113a24609a88965
1214719bb0a7b64
136b5a6a54206b
14308b7779dd92
15165b5801cdea
hexb37099bcfbc

12331012313020 has 48 divisors (see below), whose sum is σ = 25916299456320. Its totient is φ = 4928372849664.

The previous prime is 12331012312981. The next prime is 12331012313047. The reversal of 12331012313020 is 2031321013321.

It is a junction number, because it is equal to n+sod(n) for n = 12331012312982 and 12331012313000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234550777 + ... + 234603343.

It is an arithmetic number, because the mean of its divisors is an integer number (539922905340).

Almost surely, 212331012313020 is an apocalyptic number.

12331012313020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12331012313020 is an abundant number, since it is smaller than the sum of its proper divisors (13585287143300).

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

12331012313020 is a wasteful number, since it uses less digits than its factorization.

12331012313020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61942 (or 61940 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 12331012313020 its reverse (2031321013321), we get a palindrome (14362333326341).

The spelling of 12331012313020 in words is "twelve trillion, three hundred thirty-one billion, twelve million, three hundred thirteen thousand, twenty".

Divisors: 1 2 4 5 10 20 1489 2978 5956 7445 7877 14890 15754 29780 31508 39385 52567 78770 105134 157540 210268 262835 525670 1051340 11728853 23457706 46915412 58644265 78272263 117288530 156544526 234577060 313089052 391361315 414070259 782722630 828140518 1565445260 1656281036 2070351295 4140702590 8281405180 616550615651 1233101231302 2466202462604 3082753078255 6165506156510 12331012313020