231323110330321 has 2 divisors, whose sum is σ = 231323110330322. Its totient is φ = 231323110330320.

The previous prime is 231323110330297. The next prime is 231323110330337. The reversal of 231323110330321 is 123033011323132.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 181585354080321 + 49737756250000 = 13475361^2 + 7052500^2 .

It is a cyclic number.

It is not a de Polignac number, because 231323110330321 - 2³³ = 231314520395729 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231323110330321.

It is not a weakly prime, because it can be changed into another prime (231323110330721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115661555165160 + 115661555165161.

It is an arithmetic number, because the mean of its divisors is an integer number (115661555165161).

Almost surely, 2^{231323110330321} is an apocalyptic number.

It is an amenable number.

231323110330321 is a deficient number, since it is larger than the sum of its proper divisors (1).

231323110330321 is an equidigital number, since it uses as much as digits as its factorization.

231323110330321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 231323110330321 its reverse (123033011323132), we get a palindrome (354356121653453).

The spelling of 231323110330321 in words is "two hundred thirty-one trillion, three hundred twenty-three billion, one hundred ten million, three hundred thirty thousand, three hundred twenty-one".