12731230 has 16 divisors (see below), whose sum is σ = 22985280. Its totient is φ = 5077152.

The previous prime is 12731227. The next prime is 12731237. The reversal of 12731230 is 3213721.

It is a junction number, because it is equal to n+sod(n) for n = 12731198 and 12731207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12731237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1936 + ... + 5404.

It is an arithmetic number, because the mean of its divisors is an integer number (1436580).

Almost surely, 2^12731230 is an apocalyptic number.

12731230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12731230 is a deficient number, since it is larger than the sum of its proper divisors (10254050).

12731230 is a wasteful number, since it uses less digits than its factorization.

12731230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3843.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 12731230 is about 3568.0849205141. The cubic root of 12731230 is about 233.5017401023.

Adding to 12731230 its reverse (3213721), we get a palindrome (15944951).

The spelling of 12731230 in words is "twelve million, seven hundred thirty-one thousand, two hundred thirty".