31110223021201 has 2 divisors, whose sum is σ = 31110223021202. Its totient is φ = 31110223021200.

The previous prime is 31110223021169. The next prime is 31110223021223. The reversal of 31110223021201 is 10212032201113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23832508241025 + 7277714780176 = 4881855^2 + 2697724^2 .

It is an emirp because it is prime and its reverse (10212032201113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31110223021201 - 2⁵ = 31110223021169 is a prime.

It is not a weakly prime, because it can be changed into another prime (31110223021271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15555111510600 + 15555111510601.

It is an arithmetic number, because the mean of its divisors is an integer number (15555111510601).

Almost surely, 2^{31110223021201} is an apocalyptic number.

It is an amenable number.

31110223021201 is a deficient number, since it is larger than the sum of its proper divisors (1).

31110223021201 is an equidigital number, since it uses as much as digits as its factorization.

31110223021201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 31110223021201 its reverse (10212032201113), we get a palindrome (41322255222314).

The spelling of 31110223021201 in words is "thirty-one trillion, one hundred ten billion, two hundred twenty-three million, twenty-one thousand, two hundred one".