31212122323273 has 2 divisors, whose sum is σ = 31212122323274. Its totient is φ = 31212122323272.

The previous prime is 31212122323271. The next prime is 31212122323303. The reversal of 31212122323273 is 37232322121213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30994305966009 + 217816357264 = 5567253^2 + 466708^2 .

It is a cyclic number.

It is not a de Polignac number, because 31212122323273 - 2¹ = 31212122323271 is a prime.

Together with 31212122323271, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (31212122323271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15606061161636 + 15606061161637.

It is an arithmetic number, because the mean of its divisors is an integer number (15606061161637).

Almost surely, 2^{31212122323273} is an apocalyptic number.

It is an amenable number.

31212122323273 is a deficient number, since it is larger than the sum of its proper divisors (1).

31212122323273 is an equidigital number, since it uses as much as digits as its factorization.

31212122323273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 34.

Adding to 31212122323273 its reverse (37232322121213), we get a palindrome (68444444444486).

The spelling of 31212122323273 in words is "thirty-one trillion, two hundred twelve billion, one hundred twenty-two million, three hundred twenty-three thousand, two hundred seventy-three".