2311231023109 has 2 divisors, whose sum is σ = 2311231023110. Its totient is φ = 2311231023108.

The previous prime is 2311231023077. The next prime is 2311231023113. The reversal of 2311231023109 is 9013201321132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2299535682084 + 11695341025 = 1516422^2 + 108145^2 .

It is a cyclic number.

It is not a de Polignac number, because 2311231023109 - 2⁵ = 2311231023077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2311231023509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1155615511554 + 1155615511555.

It is an arithmetic number, because the mean of its divisors is an integer number (1155615511555).

Almost surely, 2^{2311231023109} is an apocalyptic number.

It is an amenable number.

2311231023109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2311231023109 is an equidigital number, since it uses as much as digits as its factorization.

2311231023109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 28.

The spelling of 2311231023109 in words is "two trillion, three hundred eleven billion, two hundred thirty-one million, twenty-three thousand, one hundred nine".