31212102330001 has 2 divisors, whose sum is σ = 31212102330002. Its totient is φ = 31212102330000.

The previous prime is 31212102329977. The next prime is 31212102330007. The reversal of 31212102330001 is 10003320121213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28350672966225 + 2861429363776 = 5324535^2 + 1691576^2 .

It is an emirp because it is prime and its reverse (10003320121213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31212102330001 - 2⁹ = 31212102329489 is a prime.

It is not a weakly prime, because it can be changed into another prime (31212102330007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15606051165000 + 15606051165001.

It is an arithmetic number, because the mean of its divisors is an integer number (15606051165001).

Almost surely, 2^{31212102330001} is an apocalyptic number.

It is an amenable number.

31212102330001 is a deficient number, since it is larger than the sum of its proper divisors (1).

31212102330001 is an equidigital number, since it uses as much as digits as its factorization.

31212102330001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 31212102330001 its reverse (10003320121213), we get a palindrome (41215422451214).

The spelling of 31212102330001 in words is "thirty-one trillion, two hundred twelve billion, one hundred two million, three hundred thirty thousand, one".