311230211129 has 2 divisors, whose sum is σ = 311230211130. Its totient is φ = 311230211128.

The previous prime is 311230211101. The next prime is 311230211197. The reversal of 311230211129 is 921112032113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 304086073600 + 7144137529 = 551440^2 + 84523^2 .

It is a cyclic number.

It is not a de Polignac number, because 311230211129 - 2¹⁶ = 311230145593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 311230211098 and 311230211107.

It is not a weakly prime, because it can be changed into another prime (311238211129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155615105564 + 155615105565.

It is an arithmetic number, because the mean of its divisors is an integer number (155615105565).

Almost surely, 2^311230211129 is an apocalyptic number.

It is an amenable number.

311230211129 is a deficient number, since it is larger than the sum of its proper divisors (1).

311230211129 is an equidigital number, since it uses as much as digits as its factorization.

311230211129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 26.

The spelling of 311230211129 in words is "three hundred eleven billion, two hundred thirty million, two hundred eleven thousand, one hundred twenty-nine".