321210232961 has 2 divisors, whose sum is σ = 321210232962. Its totient is φ = 321210232960.

The previous prime is 321210232907. The next prime is 321210233011. The reversal of 321210232961 is 169232012123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 306799671025 + 14410561936 = 553895^2 + 120044^2 .

It is a cyclic number.

It is not a de Polignac number, because 321210232961 - 2²⁶ = 321143124097 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (321210232901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160605116480 + 160605116481.

It is an arithmetic number, because the mean of its divisors is an integer number (160605116481).

Almost surely, 2^321210232961 is an apocalyptic number.

It is an amenable number.

321210232961 is a deficient number, since it is larger than the sum of its proper divisors (1).

321210232961 is an equidigital number, since it uses as much as digits as its factorization.

321210232961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 32.

The spelling of 321210232961 in words is "three hundred twenty-one billion, two hundred ten million, two hundred thirty-two thousand, nine hundred sixty-one".