31223212444441 has 2 divisors, whose sum is σ = 31223212444442. Its totient is φ = 31223212444440.

The previous prime is 31223212444381. The next prime is 31223212444483. The reversal of 31223212444441 is 14444421232213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17815194848025 + 13408017596416 = 4220805^2 + 3661696^2 .

It is a cyclic number.

It is not a de Polignac number, because 31223212444441 - 2¹¹ = 31223212442393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31223212444441.

It is not a weakly prime, because it can be changed into another prime (31223212444141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15611606222220 + 15611606222221.

It is an arithmetic number, because the mean of its divisors is an integer number (15611606222221).

Almost surely, 2^{31223212444441} is an apocalyptic number.

It is an amenable number.

31223212444441 is a deficient number, since it is larger than the sum of its proper divisors (1).

31223212444441 is an equidigital number, since it uses as much as digits as its factorization.

31223212444441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 147456, while the sum is 37.

Adding to 31223212444441 its reverse (14444421232213), we get a palindrome (45667633676654).

The spelling of 31223212444441 in words is "thirty-one trillion, two hundred twenty-three billion, two hundred twelve million, four hundred forty-four thousand, four hundred forty-one".