211434345 has 12 divisors (see below), whose sum is σ = 366486276. Its totient is φ = 112764960.

The previous prime is 211434319. The next prime is 211434407. The reversal of 211434345 is 543434112.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 30074256 + 181360089 = 5484^2 + 13467^2 .

It is not a de Polignac number, because 211434345 - 2⁵ = 211434313 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2349226 + ... + 2349315.

It is an arithmetic number, because the mean of its divisors is an integer number (30540523).

Almost surely, 2^211434345 is an apocalyptic number.

It is an amenable number.

211434345 is a deficient number, since it is larger than the sum of its proper divisors (155051931).

211434345 is a wasteful number, since it uses less digits than its factorization.

211434345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4698552 (or 4698549 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 211434345 is about 14540.7821316462. The cubic root of 211434345 is about 595.7424012155.

Adding to 211434345 its reverse (543434112), we get a palindrome (754868457).

The spelling of 211434345 in words is "two hundred eleven million, four hundred thirty-four thousand, three hundred forty-five".