2331312310121 has 2 divisors, whose sum is σ = 2331312310122. Its totient is φ = 2331312310120.

The previous prime is 2331312310069. The next prime is 2331312310139. The reversal of 2331312310121 is 1210132131332.

2331312310121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2244570279721 + 86742030400 = 1498189^2 + 294520^2 .

It is a cyclic number.

It is not a de Polignac number, because 2331312310121 - 2⁶ = 2331312310057 is a prime.

It is not a weakly prime, because it can be changed into another prime (2331312310181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1165656155060 + 1165656155061.

It is an arithmetic number, because the mean of its divisors is an integer number (1165656155061).

Almost surely, 2^{2331312310121} is an apocalyptic number.

It is an amenable number.

2331312310121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2331312310121 is an equidigital number, since it uses as much as digits as its factorization.

2331312310121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 2331312310121 its reverse (1210132131332), we get a palindrome (3541444441453).

The spelling of 2331312310121 in words is "two trillion, three hundred thirty-one billion, three hundred twelve million, three hundred ten thousand, one hundred twenty-one".