311222021212363 has 2 divisors, whose sum is σ = 311222021212364. Its totient is φ = 311222021212362.

The previous prime is 311222021212331. The next prime is 311222021212367. The reversal of 311222021212363 is 363212120222113.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 311222021212363 - 2⁵ = 311222021212331 is a prime.

It is not a weakly prime, because it can be changed into another prime (311222021212367) 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, 155611010606181 + 155611010606182.

It is an arithmetic number, because the mean of its divisors is an integer number (155611010606182).

Almost surely, 2^{311222021212363} is an apocalyptic number.

311222021212363 is a deficient number, since it is larger than the sum of its proper divisors (1).

311222021212363 is an equidigital number, since it uses as much as digits as its factorization.

311222021212363 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 31.

Adding to 311222021212363 its reverse (363212120222113), we get a palindrome (674434141434476).

The spelling of 311222021212363 in words is "three hundred eleven trillion, two hundred twenty-two billion, twenty-one million, two hundred twelve thousand, three hundred sixty-three".