311121104101 has 2 divisors, whose sum is σ = 311121104102. Its totient is φ = 311121104100.

The previous prime is 311121104087. The next prime is 311121104141. The reversal of 311121104101 is 101401121113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 300714043876 + 10407060225 = 548374^2 + 102015^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311121104101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311121104141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155560552050 + 155560552051.

It is an arithmetic number, because the mean of its divisors is an integer number (155560552051).

Almost surely, 2^311121104101 is an apocalyptic number.

It is an amenable number.

311121104101 is a deficient number, since it is larger than the sum of its proper divisors (1).

311121104101 is an equidigital number, since it uses as much as digits as its factorization.

311121104101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 311121104101 its reverse (101401121113), we get a palindrome (412522225214).

The spelling of 311121104101 in words is "three hundred eleven billion, one hundred twenty-one million, one hundred four thousand, one hundred one".