338606321 has 2 divisors, whose sum is σ = 338606322. Its totient is φ = 338606320.

The previous prime is 338606269. The next prime is 338606371. The reversal of 338606321 is 123606833.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 274366096 + 64240225 = 16564^2 + 8015^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-338606321 is a prime.

It is a super-2 number, since 2×338606321² = 229308481242310082, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (338606371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169303160 + 169303161.

It is an arithmetic number, because the mean of its divisors is an integer number (169303161).

Almost surely, 2^338606321 is an apocalyptic number.

It is an amenable number.

338606321 is a deficient number, since it is larger than the sum of its proper divisors (1).

338606321 is an equidigital number, since it uses as much as digits as its factorization.

338606321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 338606321 is about 18401.2586797751. The cubic root of 338606321 is about 696.9982489645.

The spelling of 338606321 in words is "three hundred thirty-eight million, six hundred six thousand, three hundred twenty-one".