12831105 has 16 divisors (see below), whose sum is σ = 23462784. Its totient is φ = 5865600.

The previous prime is 12831097. The next prime is 12831127. The reversal of 12831105 is 50113821.

It is not a de Polignac number, because 12831105 - 2³ = 12831097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60996 + ... + 61205.

It is an arithmetic number, because the mean of its divisors is an integer number (1466424).

Almost surely, 2^12831105 is an apocalyptic number.

12831105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12831105 is a deficient number, since it is larger than the sum of its proper divisors (10631679).

12831105 is a wasteful number, since it uses less digits than its factorization.

12831105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122216.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 12831105 is about 3582.0531821848. The cubic root of 12831105 is about 234.1107482193.

Adding to 12831105 its reverse (50113821), we get a palindrome (62944926).

The spelling of 12831105 in words is "twelve million, eight hundred thirty-one thousand, one hundred five".