345243211 has 2 divisors, whose sum is σ = 345243212. Its totient is φ = 345243210.

The previous prime is 345243203. The next prime is 345243253. The reversal of 345243211 is 112342543.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 345243211 - 2³ = 345243203 is a prime.

It is not a weakly prime, because it can be changed into another prime (345246211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172621605 + 172621606.

It is an arithmetic number, because the mean of its divisors is an integer number (172621606).

Almost surely, 2^345243211 is an apocalyptic number.

345243211 is a deficient number, since it is larger than the sum of its proper divisors (1).

345243211 is an equidigital number, since it uses as much as digits as its factorization.

345243211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 25.

The square root of 345243211 is about 18580.7214876064. The cubic root of 345243211 is about 701.5226792586.

Adding to 345243211 its reverse (112342543), we get a palindrome (457585754).

The spelling of 345243211 in words is "three hundred forty-five million, two hundred forty-three thousand, two hundred eleven".