311227712639993 has 2 divisors, whose sum is σ = 311227712639994. Its totient is φ = 311227712639992.

The previous prime is 311227712639981. The next prime is 311227712640007. The reversal of 311227712639993 is 399936217722113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 310733233651129 + 494478988864 = 17627627^2 + 703192^2 .

It is an emirp because it is prime and its reverse (399936217722113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 311227712639993 - 2⁸ = 311227712639737 is a prime.

It is not a weakly prime, because it can be changed into another prime (311227712639293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155613856319996 + 155613856319997.

It is an arithmetic number, because the mean of its divisors is an integer number (155613856319997).

Almost surely, 2^{311227712639993} is an apocalyptic number.

It is an amenable number.

311227712639993 is a deficient number, since it is larger than the sum of its proper divisors (1).

311227712639993 is an equidigital number, since it uses as much as digits as its factorization.

311227712639993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46294416, while the sum is 65.

The spelling of 311227712639993 in words is "three hundred eleven trillion, two hundred twenty-seven billion, seven hundred twelve million, six hundred thirty-nine thousand, nine hundred ninety-three".