321460393 has 2 divisors, whose sum is σ = 321460394. Its totient is φ = 321460392.

The previous prime is 321460387. The next prime is 321460457. The reversal of 321460393 is 393064123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 292170649 + 29289744 = 17093^2 + 5412^2 .

It is a cyclic number.

It is not a de Polignac number, because 321460393 - 2¹⁷ = 321329321 is a prime.

It is not a weakly prime, because it can be changed into another prime (321460093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160730196 + 160730197.

It is an arithmetic number, because the mean of its divisors is an integer number (160730197).

Almost surely, 2^321460393 is an apocalyptic number.

It is an amenable number.

321460393 is a deficient number, since it is larger than the sum of its proper divisors (1).

321460393 is an equidigital number, since it uses as much as digits as its factorization.

321460393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 321460393 is about 17929.3165792788. The cubic root of 321460393 is about 685.0293151714.

The spelling of 321460393 in words is "three hundred twenty-one million, four hundred sixty thousand, three hundred ninety-three".