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12331245 = 355315511
BaseRepresentation
bin101111000010…
…100011101101
3212012111021210
4233002203231
511124044440
61120145033
7206546103
oct57024355
925174253
1012331245
116a62713
124168179
1327299c4
1418cdc73
151138a80
hexbc28ed

12331245 has 16 divisors (see below), whose sum is σ = 20103552. Its totient is φ = 6452160.

The previous prime is 12331237. The next prime is 12331301. The reversal of 12331245 is 54213321.

It is not a de Polignac number, because 12331245 - 23 = 12331237 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6961 + ... + 8550.

It is an arithmetic number, because the mean of its divisors is an integer number (1256472).

Almost surely, 212331245 is an apocalyptic number.

12331245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12331245 is a deficient number, since it is larger than the sum of its proper divisors (7772307).

12331245 is a wasteful number, since it uses less digits than its factorization.

12331245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15572.

The product of its digits is 720, while the sum is 21.

The square root of 12331245 is about 3511.5872479550. The cubic root of 12331245 is about 231.0303177913.

Adding to 12331245 its reverse (54213321), we get a palindrome (66544566).

The spelling of 12331245 in words is "twelve million, three hundred thirty-one thousand, two hundred forty-five".

Divisors: 1 3 5 15 53 159 265 795 15511 46533 77555 232665 822083 2466249 4110415 12331245