12031706 has 4 divisors (see below), whose sum is σ = 18047562. Its totient is φ = 6015852.

The previous prime is 12031703. The next prime is 12031711. The reversal of 12031706 is 60713021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7890481 + 4141225 = 2809^2 + 2035^2 .

It is not an unprimeable number, because it can be changed into a prime (12031703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3007925 + ... + 3007928.

Almost surely, 2^12031706 is an apocalyptic number.

12031706 is a deficient number, since it is larger than the sum of its proper divisors (6015856).

12031706 is an equidigital number, since it uses as much as digits as its factorization.

12031706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6015855.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 12031706 is about 3468.6749631524. The cubic root of 12031706 is about 229.1443062407.

Adding to 12031706 its reverse (60713021), we get a palindrome (72744727).

The spelling of 12031706 in words is "twelve million, thirty-one thousand, seven hundred six".