12206631 has 4 divisors (see below), whose sum is σ = 16275512. Its totient is φ = 8137752.

The previous prime is 12206609. The next prime is 12206641. The reversal of 12206631 is 13660221.

It is a happy number.

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

It is not a de Polignac number, because 12206631 - 2⁶ = 12206567 is a prime.

It is a super-2 number, since 2×12206631² = 298003680740322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12206598 and 12206607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12206641) 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 3 ways as a sum of consecutive naturals, for example, 2034436 + ... + 2034441.

It is an arithmetic number, because the mean of its divisors is an integer number (4068878).

Almost surely, 2^12206631 is an apocalyptic number.

12206631 is a deficient number, since it is larger than the sum of its proper divisors (4068881).

12206631 is an equidigital number, since it uses as much as digits as its factorization.

12206631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4068880.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 12206631 is about 3493.7989352566. The cubic root of 12206631 is about 230.2494521002.

Adding to 12206631 its reverse (13660221), we get a palindrome (25866852).

The spelling of 12206631 in words is "twelve million, two hundred six thousand, six hundred thirty-one".