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12831093 = 3211129607
BaseRepresentation
bin110000111100…
…100101110101
3220010212221200
4300330211311
511241043333
61135003113
7214030302
oct60744565
926125850
1012831093
117274210
124369499
132873382
1419c00a9
1511d6c13
hexc3c975

12831093 has 12 divisors (see below), whose sum is σ = 20218848. Its totient is φ = 7776360.

The previous prime is 12831083. The next prime is 12831097. The reversal of 12831093 is 39013821.

It is not a de Polignac number, because 12831093 - 26 = 12831029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12831097) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 64705 + ... + 64902.

It is an arithmetic number, because the mean of its divisors is an integer number (1684904).

Almost surely, 212831093 is an apocalyptic number.

It is an amenable number.

12831093 is a deficient number, since it is larger than the sum of its proper divisors (7387755).

12831093 is a wasteful number, since it uses less digits than its factorization.

12831093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129624 (or 129621 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 12831093 is about 3582.0515071674. The cubic root of 12831093 is about 234.1106752371.

The spelling of 12831093 in words is "twelve million, eight hundred thirty-one thousand, ninety-three".

Divisors: 1 3 9 11 33 99 129607 388821 1166463 1425677 4277031 12831093