211204345 has 32 divisors (see below), whose sum is σ = 295488000. Its totient is φ = 143216640.

The previous prime is 211204321. The next prime is 211204349. The reversal of 211204345 is 543402112.

It is not a de Polignac number, because 211204345 - 2²¹ = 209107193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211204349) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104656 + ... + 106654.

It is an arithmetic number, because the mean of its divisors is an integer number (9234000).

Almost surely, 2^211204345 is an apocalyptic number.

It is an amenable number.

211204345 is a deficient number, since it is larger than the sum of its proper divisors (84283655).

211204345 is a wasteful number, since it uses less digits than its factorization.

211204345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2145.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 211204345 is about 14532.8711891353. The cubic root of 211204345 is about 595.5263050299.

Adding to 211204345 its reverse (543402112), we get a palindrome (754606457).

The spelling of 211204345 in words is "two hundred eleven million, two hundred four thousand, three hundred forty-five".