31211330121079 has 2 divisors, whose sum is σ = 31211330121080. Its totient is φ = 31211330121078.

The previous prime is 31211330121053. The next prime is 31211330121133. The reversal of 31211330121079 is 97012103311213.

It is a weak prime.

It is an emirp because it is prime and its reverse (97012103311213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31211330121079 - 2¹³ = 31211330112887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31211330221079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15605665060539 + 15605665060540.

It is an arithmetic number, because the mean of its divisors is an integer number (15605665060540).

Almost surely, 2^{31211330121079} is an apocalyptic number.

31211330121079 is a deficient number, since it is larger than the sum of its proper divisors (1).

31211330121079 is an equidigital number, since it uses as much as digits as its factorization.

31211330121079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 34.

The spelling of 31211330121079 in words is "thirty-one trillion, two hundred eleven billion, three hundred thirty million, one hundred twenty-one thousand, seventy-nine".