231103313332321 has 2 divisors, whose sum is σ = 231103313332322. Its totient is φ = 231103313332320.

The previous prime is 231103313332163. The next prime is 231103313332357. The reversal of 231103313332321 is 123233313301132.

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., 211973536794721 + 19129776537600 = 14559311^2 + 4373760^2 .

It is a cyclic number.

It is not a de Polignac number, because 231103313332321 - 2⁹ = 231103313331809 is a prime.

It is not a weakly prime, because it can be changed into another prime (231103313332921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115551656666160 + 115551656666161.

It is an arithmetic number, because the mean of its divisors is an integer number (115551656666161).

Almost surely, 2^{231103313332321} is an apocalyptic number.

It is an amenable number.

231103313332321 is a deficient number, since it is larger than the sum of its proper divisors (1).

231103313332321 is an equidigital number, since it uses as much as digits as its factorization.

231103313332321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 31.

Adding to 231103313332321 its reverse (123233313301132), we get a palindrome (354336626633453).

The spelling of 231103313332321 in words is "two hundred thirty-one trillion, one hundred three billion, three hundred thirteen million, three hundred thirty-two thousand, three hundred twenty-one".