211440345 has 8 divisors (see below), whose sum is σ = 338304576. Its totient is φ = 112768176.

The previous prime is 211440319. The next prime is 211440377. The reversal of 211440345 is 543044112.

211440345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 211440345 - 2¹⁰ = 211439321 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, 7047997 + ... + 7048026.

It is an arithmetic number, because the mean of its divisors is an integer number (42288072).

Almost surely, 2^211440345 is an apocalyptic number.

It is an amenable number.

211440345 is a deficient number, since it is larger than the sum of its proper divisors (126864231).

211440345 is a wasteful number, since it uses less digits than its factorization.

211440345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14096031.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 211440345 is about 14540.9884464571. The cubic root of 211440345 is about 595.7480364094.

Adding to 211440345 its reverse (543044112), we get a palindrome (754484457).

The spelling of 211440345 in words is "two hundred eleven million, four hundred forty thousand, three hundred forty-five".