31224012241 has 2 divisors, whose sum is σ = 31224012242. Its totient is φ = 31224012240.

The previous prime is 31224012203. The next prime is 31224012257. The reversal of 31224012241 is 14221042213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25242536641 + 5981475600 = 158879^2 + 77340^2 .

It is a cyclic number.

It is not a de Polignac number, because 31224012241 - 2⁹ = 31224011729 is a prime.

It is a super-2 number, since 2×31224012241² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31224010241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15612006120 + 15612006121.

It is an arithmetic number, because the mean of its divisors is an integer number (15612006121).

Almost surely, 2^31224012241 is an apocalyptic number.

It is an amenable number.

31224012241 is a deficient number, since it is larger than the sum of its proper divisors (1).

31224012241 is an equidigital number, since it uses as much as digits as its factorization.

31224012241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 31224012241 its reverse (14221042213), we get a palindrome (45445054454).

The spelling of 31224012241 in words is "thirty-one billion, two hundred twenty-four million, twelve thousand, two hundred forty-one".