212131144 has 32 divisors (see below), whose sum is σ = 404157600. Its totient is φ = 104368000.

The previous prime is 212131133. The next prime is 212131187. The reversal of 212131144 is 441131212.

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 in 7 ways as a sum of consecutive naturals, for example, 178119 + ... + 179305.

It is an arithmetic number, because the mean of its divisors is an integer number (12629925).

Almost surely, 2^212131144 is an apocalyptic number.

It is an amenable number.

212131144 is a deficient number, since it is larger than the sum of its proper divisors (192026456).

212131144 is a wasteful number, since it uses less digits than its factorization.

212131144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1533 (or 1529 counting only the distinct ones).

The product of its digits is 192, while the sum is 19.

The square root of 212131144 is about 14564.7225857549. The cubic root of 212131144 is about 596.3961227132.

Adding to 212131144 its reverse (441131212), we get a palindrome (653262356).

The spelling of 212131144 in words is "two hundred twelve million, one hundred thirty-one thousand, one hundred forty-four".