31223341109 has 2 divisors, whose sum is σ = 31223341110. Its totient is φ = 31223341108.

The previous prime is 31223341099. The next prime is 31223341213. The reversal of 31223341109 is 90114332213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27232260484 + 3991080625 = 165022^2 + 63175^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31223341109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31223341309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15611670554 + 15611670555.

It is an arithmetic number, because the mean of its divisors is an integer number (15611670555).

Almost surely, 2^31223341109 is an apocalyptic number.

It is an amenable number.

31223341109 is a deficient number, since it is larger than the sum of its proper divisors (1).

31223341109 is an equidigital number, since it uses as much as digits as its factorization.

31223341109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 31223341109 in words is "thirty-one billion, two hundred twenty-three million, three hundred forty-one thousand, one hundred nine".