311221321211063 has 2 divisors, whose sum is σ = 311221321211064. Its totient is φ = 311221321211062.

The previous prime is 311221321210951. The next prime is 311221321211089. The reversal of 311221321211063 is 360112123122113.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311221321211063 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311221321211963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155610660605531 + 155610660605532.

It is an arithmetic number, because the mean of its divisors is an integer number (155610660605532).

Almost surely, 2^{311221321211063} is an apocalyptic number.

311221321211063 is a deficient number, since it is larger than the sum of its proper divisors (1).

311221321211063 is an equidigital number, since it uses as much as digits as its factorization.

311221321211063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 29.

Adding to 311221321211063 its reverse (360112123122113), we get a palindrome (671333444333176).

The spelling of 311221321211063 in words is "three hundred eleven trillion, two hundred twenty-one billion, three hundred twenty-one million, two hundred eleven thousand, sixty-three".