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12313132412 = 2271830124029
BaseRepresentation
bin10110111011110101…
…10111110101111100
31011210010022221021012
423131322313311330
5200204130214122
65353453054352
7614062620140
oct133572676574
934703287235
1012313132412
115249495699
1224777873b8
131212cacb89
1484b44d220
154c0ec57e2
hex2ddeb7d7c

12313132412 has 24 divisors (see below), whose sum is σ = 24628635360. Its totient is φ = 5276548800.

The previous prime is 12313132393. The next prime is 12313132511. The reversal of 12313132412 is 21423131321.

It is a super-2 number, since 2×123131324122 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 500414 + ... + 524442.

It is an arithmetic number, because the mean of its divisors is an integer number (1026193140).

Almost surely, 212313132412 is an apocalyptic number.

It is an amenable number.

12313132412 is an abundant number, since it is smaller than the sum of its proper divisors (12315502948).

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

12313132412 is a wasteful number, since it uses less digits than its factorization.

12313132412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42341 (or 42339 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

Adding to 12313132412 its reverse (21423131321), we get a palindrome (33736263733).

The spelling of 12313132412 in words is "twelve billion, three hundred thirteen million, one hundred thirty-two thousand, four hundred twelve".

Divisors: 1 2 4 7 14 28 18301 24029 36602 48058 73204 96116 128107 168203 256214 336406 512428 672812 439754729 879509458 1759018916 3078283103 6156566206 12313132412