31110112302221 has 16 divisors (see below), whose sum is σ = 33038950996800. Its totient is φ = 29192277553920.

The previous prime is 31110112302197. The next prime is 31110112302271. The reversal of 31110112302221 is 12220321101113.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31110112302221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31110112302193 and 31110112302202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31110112302271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44189786 + ... + 44888276.

It is an arithmetic number, because the mean of its divisors is an integer number (2064934437300).

Almost surely, 2^{31110112302221} is an apocalyptic number.

It is an amenable number.

31110112302221 is a deficient number, since it is larger than the sum of its proper divisors (1928838694579).

31110112302221 is a wasteful number, since it uses less digits than its factorization.

31110112302221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706364.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 31110112302221 its reverse (12220321101113), we get a palindrome (43330433403334).

The spelling of 31110112302221 in words is "thirty-one trillion, one hundred ten billion, one hundred twelve million, three hundred two thousand, two hundred twenty-one".