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12831283 = 731371283
BaseRepresentation
bin110000111100…
…101000110011
3220010220012201
4300330220303
511241100113
61135004031
7214030663
oct60745063
926126181
1012831283
117274373
124369617
13287349a
1419c01a3
1511d6cdd
hexc3ca33

12831283 has 8 divisors (see below), whose sum is σ = 13112208. Its totient is φ = 12553344.

The previous prime is 12831227. The next prime is 12831293. The reversal of 12831283 is 38213821.

12831283 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12831283 - 29 = 12830771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12831223) 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, 9360 + ... + 10642.

It is an arithmetic number, because the mean of its divisors is an integer number (1639026).

Almost surely, 212831283 is an apocalyptic number.

12831283 is a deficient number, since it is larger than the sum of its proper divisors (280925).

12831283 is a wasteful number, since it uses less digits than its factorization.

12831283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493.

The product of its digits is 2304, while the sum is 28.

The square root of 12831283 is about 3582.0780281842. The cubic root of 12831283 is about 234.1118307845. Note that the first 3 decimals are identical.

The spelling of 12831283 in words is "twelve million, eight hundred thirty-one thousand, two hundred eighty-three".

Divisors: 1 73 137 1283 10001 93659 175771 12831283