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12231232331020 = 2256312574737643
BaseRepresentation
bin1011000111111100111001…
…0000100001110100001100
31121022021221121111121000121
42301333032100201310030
53100344030434043040
642002541153234324
72401451224261123
oct261771620416414
947267847447017
1012231232331020
11399626686861a
1214565b2b629a4
136a95284a82b1
14303dcda52aba
15163268293c4a
hexb1fce421d0c

12231232331020 has 48 divisors (see below), whose sum is σ = 25727976707328. Its totient is φ = 4884419897280.

The previous prime is 12231232330997. The next prime is 12231232331027. The reversal of 12231232331020 is 2013323213221.

It is not an unprimeable number, because it can be changed into a prime (12231232331027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 324908319 + ... + 324945961.

It is an arithmetic number, because the mean of its divisors is an integer number (535999514736).

Almost surely, 212231232331020 is an apocalyptic number.

12231232331020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12231232331020 is an abundant number, since it is smaller than the sum of its proper divisors (13496744376308).

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

12231232331020 is a wasteful number, since it uses less digits than its factorization.

12231232331020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64030 (or 64028 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 12231232331020 its reverse (2013323213221), we get a palindrome (14244555544241).

The spelling of 12231232331020 in words is "twelve trillion, two hundred thirty-one billion, two hundred thirty-two million, three hundred thirty-one thousand, twenty".

Divisors: 1 2 4 5 10 20 631 1262 2524 3155 6310 12620 25747 37643 51494 75286 102988 128735 150572 188215 257470 376430 514940 752860 16246357 23752733 32492714 47505466 64985428 81231785 95010932 118763665 162463570 237527330 324927140 475054660 969194321 1938388642 3876777284 4845971605 9691943210 19383886420 611561616551 1223123233102 2446246466204 3057808082755 6115616165510 12231232331020