31220320200113 has 16 divisors (see below), whose sum is σ = 35215294605120. Its totient is φ = 27431078899200.

The previous prime is 31220320200103. The next prime is 31220320200137. The reversal of 31220320200113 is 31100202302213.

It is a cyclic number.

It is not a de Polignac number, because 31220320200113 - 2¹⁴ = 31220320183729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31220320200103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 323431448 + ... + 323527961.

It is an arithmetic number, because the mean of its divisors is an integer number (2200955912820).

Almost surely, 2^{31220320200113} is an apocalyptic number.

It is an amenable number.

31220320200113 is a deficient number, since it is larger than the sum of its proper divisors (3994974405007).

31220320200113 is a wasteful number, since it uses less digits than its factorization.

31220320200113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646959568.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 31220320200113 its reverse (31100202302213), we get a palindrome (62320522502326).

The spelling of 31220320200113 in words is "thirty-one trillion, two hundred twenty billion, three hundred twenty million, two hundred thousand, one hundred thirteen".