311475561101 has 2 divisors, whose sum is σ = 311475561102. Its totient is φ = 311475561100.

The previous prime is 311475561097. The next prime is 311475561107. The reversal of 311475561101 is 101165574113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 183830850025 + 127644711076 = 428755^2 + 357274^2 .

It is a cyclic number.

It is not a de Polignac number, because 311475561101 - 2² = 311475561097 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311475561107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155737780550 + 155737780551.

It is an arithmetic number, because the mean of its divisors is an integer number (155737780551).

Almost surely, 2^311475561101 is an apocalyptic number.

It is an amenable number.

311475561101 is a deficient number, since it is larger than the sum of its proper divisors (1).

311475561101 is an equidigital number, since it uses as much as digits as its factorization.

311475561101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 35.

The spelling of 311475561101 in words is "three hundred eleven billion, four hundred seventy-five million, five hundred sixty-one thousand, one hundred one".