342328309 has 2 divisors, whose sum is σ = 342328310. Its totient is φ = 342328308.

The previous prime is 342328193. The next prime is 342328333. The reversal of 342328309 is 903823243.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 325080900 + 17247409 = 18030^2 + 4153^2 .

It is a cyclic number.

It is not a de Polignac number, because 342328309 - 2¹⁷ = 342197237 is a prime.

It is a super-2 number, since 2×342328309² = 234377342285598962, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (342328379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171164154 + 171164155.

It is an arithmetic number, because the mean of its divisors is an integer number (171164155).

Almost surely, 2^342328309 is an apocalyptic number.

It is an amenable number.

342328309 is a deficient number, since it is larger than the sum of its proper divisors (1).

342328309 is an equidigital number, since it uses as much as digits as its factorization.

342328309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 342328309 is about 18502.1163384084. The cubic root of 342328309 is about 699.5427687542.

The spelling of 342328309 in words is "three hundred forty-two million, three hundred twenty-eight thousand, three hundred nine".