12731012 has 12 divisors (see below), whose sum is σ = 25462080. Its totient is φ = 5456136.

The previous prime is 12731003. The next prime is 12731023. The reversal of 12731012 is 21013721.

12731012 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227312 + ... + 227367.

It is an arithmetic number, because the mean of its divisors is an integer number (2121840).

Almost surely, 2^12731012 is an apocalyptic number.

It is an amenable number.

12731012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12731012 is a wasteful number, since it uses less digits than its factorization.

12731012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454690 (or 454688 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 12731012 is about 3568.0543717830. The cubic root of 12731012 is about 233.5004073254.

Adding to 12731012 its reverse (21013721), we get a palindrome (33744733).

The spelling of 12731012 in words is "twelve million, seven hundred thirty-one thousand, twelve".