321021132317 has 2 divisors, whose sum is σ = 321021132318. Its totient is φ = 321021132316.

The previous prime is 321021132301. The next prime is 321021132343. The reversal of 321021132317 is 713231120123.

It is an a-pointer prime, because the next prime (321021132343) can be obtained adding 321021132317 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 309112648441 + 11908483876 = 555979^2 + 109126^2 .

It is a cyclic number.

It is not a de Polignac number, because 321021132317 - 2⁴ = 321021132301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321021132517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160510566158 + 160510566159.

It is an arithmetic number, because the mean of its divisors is an integer number (160510566159).

Almost surely, 2^321021132317 is an apocalyptic number.

It is an amenable number.

321021132317 is a deficient number, since it is larger than the sum of its proper divisors (1).

321021132317 is an equidigital number, since it uses as much as digits as its factorization.

321021132317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 26.

The spelling of 321021132317 in words is "three hundred twenty-one billion, twenty-one million, one hundred thirty-two thousand, three hundred seventeen".