211431112 has 16 divisors (see below), whose sum is σ = 410103900. Its totient is φ = 102070080.

The previous prime is 211431109. The next prime is 211431119. The reversal of 211431112 is 211134112.

It can be written as a sum of positive squares in 2 ways, for example, as 184036356 + 27394756 = 13566^2 + 5234^2 .

It is not an unprimeable number, because it can be changed into a prime (211431119) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 455439 + ... + 455902.

Almost surely, 2^211431112 is an apocalyptic number.

It is an amenable number.

211431112 is a deficient number, since it is larger than the sum of its proper divisors (198672788).

211431112 is a wasteful number, since it uses less digits than its factorization.

211431112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911376 (or 911372 counting only the distinct ones).

The product of its digits is 48, while the sum is 16.

The square root of 211431112 is about 14540.6709611352. The cubic root of 211431112 is about 595.7393647410.

Adding to 211431112 its reverse (211134112), we get a palindrome (422565224).

The spelling of 211431112 in words is "two hundred eleven million, four hundred thirty-one thousand, one hundred twelve".