321034513 has 2 divisors, whose sum is σ = 321034514. Its totient is φ = 321034512.

The previous prime is 321034471. The next prime is 321034541. The reversal of 321034513 is 315430123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 316590849 + 4443664 = 17793^2 + 2108^2 .

It is an emirp because it is prime and its reverse (315430123) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321034513 is a prime.

It is not a weakly prime, because it can be changed into another prime (321034213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160517256 + 160517257.

It is an arithmetic number, because the mean of its divisors is an integer number (160517257).

Almost surely, 2^321034513 is an apocalyptic number.

It is an amenable number.

321034513 is a deficient number, since it is larger than the sum of its proper divisors (1).

321034513 is an equidigital number, since it uses as much as digits as its factorization.

321034513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 321034513 is about 17917.4360051878. The cubic root of 321034513 is about 684.7266659479.

Adding to 321034513 its reverse (315430123), we get a palindrome (636464636).

The spelling of 321034513 in words is "three hundred twenty-one million, thirty-four thousand, five hundred thirteen".