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12431042412 = 2232294523669
BaseRepresentation
bin10111001001111001…
…01010011101101100
31012002100012101101020
423210330222131230
5200424321324122
65413304214140
7620024055105
oct134474523554
935070171336
1012431042412
1152a9aaa178
1224ab16a350
1312315546c9
1485cd833ac
154cb516c5c
hex2e4f2a76c

12431042412 has 24 divisors (see below), whose sum is σ = 29132434800. Its totient is φ = 4125585216.

The previous prime is 12431042411. The next prime is 12431042419. The reversal of 12431042412 is 21424013421.

It is not an unprimeable number, because it can be changed into a prime (12431042411) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2259087 + ... + 2264582.

It is an arithmetic number, because the mean of its divisors is an integer number (1213851450).

Almost surely, 212431042412 is an apocalyptic number.

12431042412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12431042412 is an abundant number, since it is smaller than the sum of its proper divisors (16701392388).

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

12431042412 is a wasteful number, since it uses less digits than its factorization.

12431042412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4523905 (or 4523903 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 12431042412 its reverse (21424013421), we get a palindrome (33855055833).

The spelling of 12431042412 in words is "twelve billion, four hundred thirty-one million, forty-two thousand, four hundred twelve".

Divisors: 1 2 3 4 6 12 229 458 687 916 1374 2748 4523669 9047338 13571007 18094676 27142014 54284028 1035920201 2071840402 3107760603 4143680804 6215521206 12431042412