12224731 has 2 divisors, whose sum is σ = 12224732. Its totient is φ = 12224730.

The previous prime is 12224701. The next prime is 12224749. The reversal of 12224731 is 13742221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12224731 - 2⁷ = 12224603 is a prime.

It is a super-3 number, since 3×12224731³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (12224701) 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 as a sum of consecutive naturals, namely, 6112365 + 6112366.

It is an arithmetic number, because the mean of its divisors is an integer number (6112366).

Almost surely, 2^12224731 is an apocalyptic number.

12224731 is a deficient number, since it is larger than the sum of its proper divisors (1).

12224731 is an equidigital number, since it uses as much as digits as its factorization.

12224731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 672, while the sum is 22.

The square root of 12224731 is about 3496.3882793534. The cubic root of 12224731 is about 230.3632005733.

Adding to 12224731 its reverse (13742221), we get a palindrome (25966952).

The spelling of 12224731 in words is "twelve million, two hundred twenty-four thousand, seven hundred thirty-one".