321680358347 has 2 divisors, whose sum is σ = 321680358348. Its totient is φ = 321680358346.

The previous prime is 321680358331. The next prime is 321680358403. The reversal of 321680358347 is 743853086123.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 321680358347 - 2⁴ = 321680358331 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 321680358295 and 321680358304.

It is not a weakly prime, because it can be changed into another prime (321680358547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160840179173 + 160840179174.

It is an arithmetic number, because the mean of its divisors is an integer number (160840179174).

Almost surely, 2^321680358347 is an apocalyptic number.

321680358347 is a deficient number, since it is larger than the sum of its proper divisors (1).

321680358347 is an equidigital number, since it uses as much as digits as its factorization.

321680358347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2903040, while the sum is 50.

The spelling of 321680358347 in words is "three hundred twenty-one billion, six hundred eighty million, three hundred fifty-eight thousand, three hundred forty-seven".