31321212102071 has 2 divisors, whose sum is σ = 31321212102072. Its totient is φ = 31321212102070.

The previous prime is 31321212101909. The next prime is 31321212102073. The reversal of 31321212102071 is 17020121212313.

It is a strong prime.

It is an emirp because it is prime and its reverse (17020121212313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31321212102071 - 2³⁴ = 31304032232887 is a prime.

Together with 31321212102073, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31321212102071.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31321212102073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15660606051035 + 15660606051036.

It is an arithmetic number, because the mean of its divisors is an integer number (15660606051036).

Almost surely, 2^{31321212102071} is an apocalyptic number.

31321212102071 is a deficient number, since it is larger than the sum of its proper divisors (1).

31321212102071 is an equidigital number, since it uses as much as digits as its factorization.

31321212102071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 26.

Adding to 31321212102071 its reverse (17020121212313), we get a palindrome (48341333314384).

The spelling of 31321212102071 in words is "thirty-one trillion, three hundred twenty-one billion, two hundred twelve million, one hundred two thousand, seventy-one".