212131234 has 32 divisors (see below), whose sum is σ = 369847296. Its totient is φ = 89376720.

The previous prime is 212131229. The next prime is 212131247. The reversal of 212131234 is 432131212.

It is a happy number.

212131234 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 361089 + ... + 361675.

It is an arithmetic number, because the mean of its divisors is an integer number (11557728).

Almost surely, 2^212131234 is an apocalyptic number.

212131234 is a deficient number, since it is larger than the sum of its proper divisors (157716062).

212131234 is a wasteful number, since it uses less digits than its factorization.

212131234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990.

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

The square root of 212131234 is about 14564.7256754118. The cubic root of 212131234 is about 596.3962070567.

Adding to 212131234 its reverse (432131212), we get a palindrome (644262446).

The spelling of 212131234 in words is "two hundred twelve million, one hundred thirty-one thousand, two hundred thirty-four".