321347395049 has 2 divisors, whose sum is σ = 321347395050. Its totient is φ = 321347395048.

The previous prime is 321347395021. The next prime is 321347395097. The reversal of 321347395049 is 940593743123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 301573410649 + 19773984400 = 549157^2 + 140620^2 .

It is an emirp because it is prime and its reverse (940593743123) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321347395049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 321347394988 and 321347395006.

It is not a weakly prime, because it can be changed into another prime (321347395009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160673697524 + 160673697525.

It is an arithmetic number, because the mean of its divisors is an integer number (160673697525).

Almost surely, 2^321347395049 is an apocalyptic number.

It is an amenable number.

321347395049 is a deficient number, since it is larger than the sum of its proper divisors (1).

321347395049 is an equidigital number, since it uses as much as digits as its factorization.

321347395049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2449440, while the sum is 50.

The spelling of 321347395049 in words is "three hundred twenty-one billion, three hundred forty-seven million, three hundred ninety-five thousand, forty-nine".