211304734 has 16 divisors (see below), whose sum is σ = 329542416. Its totient is φ = 101534400.

The previous prime is 211304663. The next prime is 211304771. The reversal of 211304734 is 437403112.

It is a super-2 number, since 2×211304734² = 89299381221621512, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211304699 and 211304708.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13737 + ... + 24724.

It is an arithmetic number, because the mean of its divisors is an integer number (20596401).

Almost surely, 2^211304734 is an apocalyptic number.

211304734 is a deficient number, since it is larger than the sum of its proper divisors (118237682).

211304734 is a wasteful number, since it uses less digits than its factorization.

211304734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38571.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 211304734 is about 14536.3246386423. The cubic root of 211304734 is about 595.6206446619.

Adding to 211304734 its reverse (437403112), we get a palindrome (648707846).

The spelling of 211304734 in words is "two hundred eleven million, three hundred four thousand, seven hundred thirty-four".