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12312302412 = 2231399733399
BaseRepresentation
bin10110111011101111…
…01101001101001100
31011210001202202201110
423131313231031030
5200203422134122
65353423212020
7614052562254
oct133567551514
934701682643
1012312302412
115248a79043
122477447010
131212a7c157
1484b2b4964
154c0dae90c
hex2ddded34c

12312302412 has 24 divisors (see below), whose sum is σ = 28749280000. Its totient is φ = 4101161616.

The previous prime is 12312302393. The next prime is 12312302417. The reversal of 12312302412 is 21420321321.

It is not an unprimeable number, because it can be changed into a prime (12312302417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 349912 + ... + 383487.

Almost surely, 212312302412 is an apocalyptic number.

12312302412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12312302412 is an abundant number, since it is smaller than the sum of its proper divisors (16436977588).

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

12312302412 is a wasteful number, since it uses less digits than its factorization.

12312302412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734805 (or 734803 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 12312302412 its reverse (21420321321), we get a palindrome (33732623733).

The spelling of 12312302412 in words is "twelve billion, three hundred twelve million, three hundred two thousand, four hundred twelve".

Divisors: 1 2 3 4 6 12 1399 2798 4197 5596 8394 16788 733399 1466798 2200197 2933596 4400394 8800788 1026025201 2052050402 3078075603 4104100804 6156151206 12312302412