331023110021231 has 2 divisors, whose sum is σ = 331023110021232. Its totient is φ = 331023110021230.

The previous prime is 331023110021213. The next prime is 331023110021273. The reversal of 331023110021231 is 132120011320133.

Together with previous prime (331023110021213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 331023110021231 - 2³⁴ = 331005930152047 is a prime.

It is a super-2 number, since 2×331023110021231² (a number of 30 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 331023110021197 and 331023110021206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331023110081231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165511555010615 + 165511555010616.

It is an arithmetic number, because the mean of its divisors is an integer number (165511555010616).

Almost surely, 2^{331023110021231} is an apocalyptic number.

331023110021231 is a deficient number, since it is larger than the sum of its proper divisors (1).

331023110021231 is an equidigital number, since it uses as much as digits as its factorization.

331023110021231 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 331023110021231 its reverse (132120011320133), we get a palindrome (463143121341364).

The spelling of 331023110021231 in words is "three hundred thirty-one trillion, twenty-three billion, one hundred ten million, twenty-one thousand, two hundred thirty-one".