31322111121 has 12 divisors (see below), whose sum is σ = 51706342272. Its totient is φ = 17898349176.

The previous prime is 31322111099. The next prime is 31322111153. The reversal of 31322111121 is 12111122313.

31322111121 is a `hidden beast` number, since 313 + 221 + 11 + 121 = 666.

It is not a de Polignac number, because 31322111121 - 2⁹ = 31322110609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31322111094 and 31322111103.

It is not an unprimeable number, because it can be changed into a prime (31322111221) 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 11 ways as a sum of consecutive naturals, for example, 248588121 + ... + 248588246.

It is an arithmetic number, because the mean of its divisors is an integer number (4308861856).

Almost surely, 2^31322111121 is an apocalyptic number.

It is an amenable number.

31322111121 is a deficient number, since it is larger than the sum of its proper divisors (20384231151).

31322111121 is a wasteful number, since it uses less digits than its factorization.

31322111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497176380 (or 497176377 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

Adding to 31322111121 its reverse (12111122313), we get a palindrome (43433233434).

The spelling of 31322111121 in words is "thirty-one billion, three hundred twenty-two million, one hundred eleven thousand, one hundred twenty-one".