34478321 has 2 divisors, whose sum is σ = 34478322. Its totient is φ = 34478320.

The previous prime is 34478309. The next prime is 34478347. The reversal of 34478321 is 12387443.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34093921 + 384400 = 5839^2 + 620^2 .

It is a cyclic number.

It is not a de Polignac number, because 34478321 - 2¹⁴ = 34461937 is a prime.

It is not a weakly prime, because it can be changed into another prime (34478351) 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, 17239160 + 17239161.

It is an arithmetic number, because the mean of its divisors is an integer number (17239161).

Almost surely, 2^34478321 is an apocalyptic number.

It is an amenable number.

34478321 is a deficient number, since it is larger than the sum of its proper divisors (1).

34478321 is an equidigital number, since it uses as much as digits as its factorization.

34478321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 32.

The square root of 34478321 is about 5871.8243332034. The cubic root of 34478321 is about 325.4733017115.

The spelling of 34478321 in words is "thirty-four million, four hundred seventy-eight thousand, three hundred twenty-one".