345173207 has 2 divisors, whose sum is σ = 345173208. Its totient is φ = 345173206.

The previous prime is 345173203. The next prime is 345173221. The reversal of 345173207 is 702371543.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 345173207 - 2² = 345173203 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 (345173203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172586603 + 172586604.

It is an arithmetic number, because the mean of its divisors is an integer number (172586604).

Almost surely, 2^345173207 is an apocalyptic number.

345173207 is a deficient number, since it is larger than the sum of its proper divisors (1).

345173207 is an equidigital number, since it uses as much as digits as its factorization.

345173207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 345173207 is about 18578.8376116484. The cubic root of 345173207 is about 701.4752607898.

The spelling of 345173207 in words is "three hundred forty-five million, one hundred seventy-three thousand, two hundred seven".