31212122323271 has 2 divisors, whose sum is σ = 31212122323272. Its totient is φ = 31212122323270.

The previous prime is 31212122323241. The next prime is 31212122323273. The reversal of 31212122323271 is 17232322121213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31212122323271 - 2³⁴ = 31194942454087 is a prime.

Together with 31212122323273, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31212122323273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15606061161635 + 15606061161636.

It is an arithmetic number, because the mean of its divisors is an integer number (15606061161636).

Almost surely, 2^{31212122323271} is an apocalyptic number.

31212122323271 is a deficient number, since it is larger than the sum of its proper divisors (1).

31212122323271 is an equidigital number, since it uses as much as digits as its factorization.

31212122323271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 32.

Adding to 31212122323271 its reverse (17232322121213), we get a palindrome (48444444444484).

The spelling of 31212122323271 in words is "thirty-one trillion, two hundred twelve billion, one hundred twenty-two million, three hundred twenty-three thousand, two hundred seventy-one".