211231234 has 4 divisors (see below), whose sum is σ = 316846854. Its totient is φ = 105615616.

The previous prime is 211231219. The next prime is 211231271. The reversal of 211231234 is 432132112.

It is a happy number.

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., 138180025 + 73051209 = 11755^2 + 8547^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52807807 + ... + 52807810.

Almost surely, 2^211231234 is an apocalyptic number.

211231234 is a deficient number, since it is larger than the sum of its proper divisors (105615620).

211231234 is a wasteful number, since it uses less digits than its factorization.

211231234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105615619.

The product of its digits is 288, while the sum is 19.

The square root of 211231234 is about 14533.7962693854. The cubic root of 211231234 is about 595.5515766490.

Adding to 211231234 its reverse (432132112), we get a palindrome (643363346).

The spelling of 211231234 in words is "two hundred eleven million, two hundred thirty-one thousand, two hundred thirty-four".