321334609 has 2 divisors, whose sum is σ = 321334610. Its totient is φ = 321334608.

The previous prime is 321334577. The next prime is 321334627. The reversal of 321334609 is 906433123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 310464400 + 10870209 = 17620^2 + 3297^2 .

It is a cyclic number.

It is not a de Polignac number, because 321334609 - 2⁵ = 321334577 is a prime.

It is equal to p_17343373 and since 321334609 and 17343373 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (321334639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160667304 + 160667305.

It is an arithmetic number, because the mean of its divisors is an integer number (160667305).

Almost surely, 2^321334609 is an apocalyptic number.

It is an amenable number.

321334609 is a deficient number, since it is larger than the sum of its proper divisors (1).

321334609 is an equidigital number, since it uses as much as digits as its factorization.

321334609 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 321334609 is about 17925.8084615450. The cubic root of 321334609 is about 684.9399553101.

The spelling of 321334609 in words is "three hundred twenty-one million, three hundred thirty-four thousand, six hundred nine".