212523712 has 14 divisors (see below), whose sum is σ = 421726868. Its totient is φ = 106261824.

The previous prime is 212523677. The next prime is 212523713. The reversal of 212523712 is 217325212.

It is not an unprimeable number, because it can be changed into a prime (212523713) 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 as a sum of consecutive naturals, namely, 1660278 + ... + 1660405.

Almost surely, 2^212523712 is an apocalyptic number.

It is an amenable number.

212523712 is a deficient number, since it is larger than the sum of its proper divisors (209203156).

212523712 is an equidigital number, since it uses as much as digits as its factorization.

212523712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3320695 (or 3320685 counting only the distinct ones).

The product of its digits is 1680, while the sum is 25.

The square root of 212523712 is about 14578.1930293161. The cubic root of 212523712 is about 596.7637911173.

Adding to 212523712 its reverse (217325212), we get a palindrome (429848924).

It can be divided in two parts, 21252 and 3712, that added together give a square (24964 = 158²).

The spelling of 212523712 in words is "two hundred twelve million, five hundred twenty-three thousand, seven hundred twelve".