345273211 has 2 divisors, whose sum is σ = 345273212. Its totient is φ = 345273210.

The previous prime is 345273197. The next prime is 345273221. The reversal of 345273211 is 112372543.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 345273211 - 2⁷ = 345273083 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 345273211.

It is not a weakly prime, because it can be changed into another prime (345273221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172636605 + 172636606.

It is an arithmetic number, because the mean of its divisors is an integer number (172636606).

Almost surely, 2^345273211 is an apocalyptic number.

345273211 is a deficient number, since it is larger than the sum of its proper divisors (1).

345273211 is an equidigital number, since it uses as much as digits as its factorization.

345273211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 28.

The square root of 345273211 is about 18581.5287584203. The cubic root of 345273211 is about 701.5429983362.

The spelling of 345273211 in words is "three hundred forty-five million, two hundred seventy-three thousand, two hundred eleven".