345035309 has 2 divisors, whose sum is σ = 345035310. Its totient is φ = 345035308.

The previous prime is 345035297. The next prime is 345035329. The reversal of 345035309 is 903530543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 324360100 + 20675209 = 18010^2 + 4547^2 .

It is a cyclic number.

It is not a de Polignac number, because 345035309 - 2⁴ = 345035293 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345035329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172517654 + 172517655.

It is an arithmetic number, because the mean of its divisors is an integer number (172517655).

Almost surely, 2^345035309 is an apocalyptic number.

It is an amenable number.

345035309 is a deficient number, since it is larger than the sum of its proper divisors (1).

345035309 is an equidigital number, since it uses as much as digits as its factorization.

345035309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24300, while the sum is 32.

The square root of 345035309 is about 18575.1260830176. The cubic root of 345035309 is about 701.3818343419.

The spelling of 345035309 in words is "three hundred forty-five million, thirty-five thousand, three hundred nine".