31222010213 has 16 divisors (see below), whose sum is σ = 31934164416. Its totient is φ = 30516963840.

The previous prime is 31222010203. The next prime is 31222010227. The reversal of 31222010213 is 31201022213.

It is a cyclic number.

It is not a de Polignac number, because 31222010213 - 2¹⁸ = 31221748069 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31222010191 and 31222010200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31222010203) 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 in 15 ways as a sum of consecutive naturals, for example, 6608270 + ... + 6612992.

It is an arithmetic number, because the mean of its divisors is an integer number (1995885276).

Almost surely, 2^31222010213 is an apocalyptic number.

It is an amenable number.

31222010213 is a deficient number, since it is larger than the sum of its proper divisors (712154203).

31222010213 is a wasteful number, since it uses less digits than its factorization.

31222010213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5444.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 31222010213 its reverse (31201022213), we get a palindrome (62423032426).

The spelling of 31222010213 in words is "thirty-one billion, two hundred twenty-two million, ten thousand, two hundred thirteen".