211234345 has 12 divisors (see below), whose sum is σ = 294866244. Its totient is φ = 144846240.

The previous prime is 211234319. The next prime is 211234351. The reversal of 211234345 is 543432112.

211234345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 95628841 + 115605504 = 9779^2 + 10752^2 .

It is not a de Polignac number, because 211234345 - 2⁹ = 211233833 is a prime.

It is a Duffinian number.

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, 430846 + ... + 431335.

It is an arithmetic number, because the mean of its divisors is an integer number (24572187).

Almost surely, 2^211234345 is an apocalyptic number.

It is an amenable number.

211234345 is a deficient number, since it is larger than the sum of its proper divisors (83631899).

211234345 is an equidigital number, since it uses as much as digits as its factorization.

211234345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862200 (or 862193 counting only the distinct ones).

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

The square root of 211234345 is about 14533.9032953987. The cubic root of 211234345 is about 595.5545003831.

Adding to 211234345 its reverse (543432112), we get a palindrome (754666457).

The spelling of 211234345 in words is "two hundred eleven million, two hundred thirty-four thousand, three hundred forty-five".