31222012311223 has 2 divisors, whose sum is σ = 31222012311224. Its totient is φ = 31222012311222.

The previous prime is 31222012311221. The next prime is 31222012311233. The reversal of 31222012311223 is 32211321022213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31222012311223 - 2¹ = 31222012311221 is a prime.

Together with 31222012311221, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31222012311221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15611006155611 + 15611006155612.

It is an arithmetic number, because the mean of its divisors is an integer number (15611006155612).

Almost surely, 2^{31222012311223} is an apocalyptic number.

31222012311223 is a deficient number, since it is larger than the sum of its proper divisors (1).

31222012311223 is an equidigital number, since it uses as much as digits as its factorization.

31222012311223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 31222012311223 its reverse (32211321022213), we get a palindrome (63433333333436).

The spelling of 31222012311223 in words is "thirty-one trillion, two hundred twenty-two billion, twelve million, three hundred eleven thousand, two hundred twenty-three".