31321030121121 has 32 divisors (see below), whose sum is σ = 45119855088000. Its totient is φ = 19211919957504.

The previous prime is 31321030121047. The next prime is 31321030121159. The reversal of 31321030121121 is 12112103012313.

It is not a de Polignac number, because 31321030121121 - 2¹⁷ = 31321029990049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31321030171121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36781261 + ... + 37623173.

It is an arithmetic number, because the mean of its divisors is an integer number (1409995471500).

Almost surely, 2^{31321030121121} is an apocalyptic number.

It is an amenable number.

31321030121121 is a deficient number, since it is larger than the sum of its proper divisors (13798824966879).

31321030121121 is a wasteful number, since it uses less digits than its factorization.

31321030121121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 845025.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 31321030121121 its reverse (12112103012313), we get a palindrome (43433133133434).

The spelling of 31321030121121 in words is "thirty-one trillion, three hundred twenty-one billion, thirty million, one hundred twenty-one thousand, one hundred twenty-one".