12531206 has 8 divisors (see below), whose sum is σ = 18878184. Its totient is φ = 6238480.

The previous prime is 12531191. The next prime is 12531209. The reversal of 12531206 is 60213521.

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

It is a super-2 number, since 2×12531206² = 314062247628872, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12531209) 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 3 ways as a sum of consecutive naturals, for example, 12980 + ... + 13911.

It is an arithmetic number, because the mean of its divisors is an integer number (2359773).

Almost surely, 2^12531206 is an apocalyptic number.

12531206 is a deficient number, since it is larger than the sum of its proper divisors (6346978).

12531206 is a wasteful number, since it uses less digits than its factorization.

12531206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27126.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 12531206 is about 3539.9443498451. The cubic root of 12531206 is about 232.2724084186.

Adding to 12531206 its reverse (60213521), we get a palindrome (72744727).

The spelling of 12531206 in words is "twelve million, five hundred thirty-one thousand, two hundred six".