31223909068811 has 2 divisors, whose sum is σ = 31223909068812. Its totient is φ = 31223909068810.

The previous prime is 31223909068727. The next prime is 31223909068813. The reversal of 31223909068811 is 11886090932213.

It is a strong prime.

It is an emirp because it is prime and its reverse (11886090932213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31223909068811 - 2¹⁸ = 31223908806667 is a prime.

Together with 31223909068813, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (31223909068813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15611954534405 + 15611954534406.

It is an arithmetic number, because the mean of its divisors is an integer number (15611954534406).

Almost surely, 2^{31223909068811} is an apocalyptic number.

31223909068811 is a deficient number, since it is larger than the sum of its proper divisors (1).

31223909068811 is an equidigital number, since it uses as much as digits as its factorization.

31223909068811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1119744, while the sum is 53.

The spelling of 31223909068811 in words is "thirty-one trillion, two hundred twenty-three billion, nine hundred nine million, sixty-eight thousand, eight hundred eleven".