31222033213 has 24 divisors (see below), whose sum is σ = 38711354112. Its totient is φ = 24651542784.

The previous prime is 31222033189. The next prime is 31222033223. The reversal of 31222033213 is 31233022213.

It is a de Polignac number, because none of the positive numbers 2^k-31222033213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31222033223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69106 + ... + 259267.

It is an arithmetic number, because the mean of its divisors is an integer number (1612973088).

Almost surely, 2^31222033213 is an apocalyptic number.

It is an amenable number.

31222033213 is a deficient number, since it is larger than the sum of its proper divisors (7489320899).

31222033213 is a wasteful number, since it uses less digits than its factorization.

31222033213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328461 (or 328444 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 31222033213 its reverse (31233022213), we get a palindrome (62455055426).

The spelling of 31222033213 in words is "thirty-one billion, two hundred twenty-two million, thirty-three thousand, two hundred thirteen".