31222211222213 has 16 divisors (see below), whose sum is σ = 34798337472192. Its totient is φ = 27773864064000.

The previous prime is 31222211222141. The next prime is 31222211222269.

31222211222213 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 31222211222213 - 2¹⁶ = 31222211156677 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31222211222413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120416783 + ... + 120675788.

It is an arithmetic number, because the mean of its divisors is an integer number (2174896092012).

Almost surely, 2^{31222211222213} is an apocalyptic number.

It is an amenable number.

31222211222213 is a deficient number, since it is larger than the sum of its proper divisors (3576126249979).

31222211222213 is a wasteful number, since it uses less digits than its factorization.

31222211222213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241092836.

The product of its digits is 2304, while the sum is 26.

It can be divided in two parts, 3122221 and 1222213, that added together give a palindrome (4344434).

The spelling of 31222211222213 in words is "thirty-one trillion, two hundred twenty-two billion, two hundred eleven million, two hundred twenty-two thousand, two hundred thirteen".