211443074 has 4 divisors (see below), whose sum is σ = 317164614. Its totient is φ = 105721536.

The previous prime is 211443053. The next prime is 211443101. The reversal of 211443074 is 470344112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 210453049 + 990025 = 14507^2 + 995^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52860767 + ... + 52860770.

Almost surely, 2^211443074 is an apocalyptic number.

211443074 is a deficient number, since it is larger than the sum of its proper divisors (105721540).

211443074 is a wasteful number, since it uses less digits than its factorization.

211443074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105721539.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 211443074 is about 14541.0822843418. The cubic root of 211443074 is about 595.7505994482.

Adding to 211443074 its reverse (470344112), we get a palindrome (681787186).

The spelling of 211443074 in words is "two hundred eleven million, four hundred forty-three thousand, seventy-four".