211331312 has 10 divisors (see below), whose sum is σ = 409454448. Its totient is φ = 105665648.

The previous prime is 211331311. The next prime is 211331339. The reversal of 211331312 is 213133112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211331311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6604088 + ... + 6604119.

Almost surely, 2^211331312 is an apocalyptic number.

It is an amenable number.

211331312 is a deficient number, since it is larger than the sum of its proper divisors (198123136).

211331312 is a wasteful number, since it uses less digits than its factorization.

211331312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13208215 (or 13208209 counting only the distinct ones).

The product of its digits is 108, while the sum is 17.

The square root of 211331312 is about 14537.2388024686. The cubic root of 211331312 is about 595.6456160883.

Adding to 211331312 its reverse (213133112), we get a palindrome (424464424).

The spelling of 211331312 in words is "two hundred eleven million, three hundred thirty-one thousand, three hundred twelve".