31223211232213 has 16 divisors (see below), whose sum is σ = 41922073823616. Its totient is φ = 22458253832640.

The previous prime is 31223211232189. The next prime is 31223211232237.

31223211232213 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (31223211232189) and next prime (31223211232237).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31223211232213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31223211232253) 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 in 15 ways as a sum of consecutive naturals, for example, 15596008606 + ... + 15596010607.

It is an arithmetic number, because the mean of its divisors is an integer number (2620129613976).

Almost surely, 2^{31223211232213} is an apocalyptic number.

It is an amenable number.

31223211232213 is a deficient number, since it is larger than the sum of its proper divisors (10698862591403).

31223211232213 is a wasteful number, since it uses less digits than its factorization.

31223211232213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31192019244.

The product of its digits is 5184, while the sum is 28.

It can be divided in two parts, 3122321 and 1232213, that added together give a palindrome (4354534).

The spelling of 31223211232213 in words is "thirty-one trillion, two hundred twenty-three billion, two hundred eleven million, two hundred thirty-two thousand, two hundred thirteen".