31020223212089 has 2 divisors, whose sum is σ = 31020223212090. Its totient is φ = 31020223212088.

The previous prime is 31020223212079. The next prime is 31020223212151. The reversal of 31020223212089 is 98021232202013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26598001155625 + 4422222056464 = 5157325^2 + 2102908^2 .

It is a cyclic number.

It is not a de Polignac number, because 31020223212089 - 2⁴ = 31020223212073 is a prime.

It is not a weakly prime, because it can be changed into another prime (31020223212059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15510111606044 + 15510111606045.

It is an arithmetic number, because the mean of its divisors is an integer number (15510111606045).

Almost surely, 2^{31020223212089} is an apocalyptic number.

It is an amenable number.

31020223212089 is a deficient number, since it is larger than the sum of its proper divisors (1).

31020223212089 is an equidigital number, since it uses as much as digits as its factorization.

31020223212089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 35.

The spelling of 31020223212089 in words is "thirty-one trillion, twenty billion, two hundred twenty-three million, two hundred twelve thousand, eighty-nine".