211343345 has 8 divisors (see below), whose sum is σ = 257769960. Its totient is φ = 166302720.

The previous prime is 211343267. The next prime is 211343351. The reversal of 211343345 is 543343112.

It can be written as a sum of positive squares in 4 ways, for example, as 25321024 + 186022321 = 5032^2 + 13639^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 211343345 - 2²⁶ = 144234481 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 346160 + ... + 346769.

It is an arithmetic number, because the mean of its divisors is an integer number (32221245).

Almost surely, 2^211343345 is an apocalyptic number.

It is an amenable number.

211343345 is a deficient number, since it is larger than the sum of its proper divisors (46426615).

211343345 is an equidigital number, since it uses as much as digits as its factorization.

211343345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692995.

The product of its digits is 4320, while the sum is 26.

The square root of 211343345 is about 14537.6526647186. The cubic root of 211343345 is about 595.6569210350.

Adding to 211343345 its reverse (543343112), we get a palindrome (754686457).

The spelling of 211343345 in words is "two hundred eleven million, three hundred forty-three thousand, three hundred forty-five".