212340524 has 12 divisors (see below), whose sum is σ = 405377448. Its totient is φ = 96518400.

The previous prime is 212340511. The next prime is 212340529. The reversal of 212340524 is 425043212.

It is a happy number.

212340524 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 212340524.

It is not an unprimeable number, because it can be changed into a prime (212340529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2412917 + ... + 2413004.

It is an arithmetic number, because the mean of its divisors is an integer number (33781454).

Almost surely, 2^212340524 is an apocalyptic number.

It is an amenable number.

212340524 is a deficient number, since it is larger than the sum of its proper divisors (193036924).

212340524 is a wasteful number, since it uses less digits than its factorization.

212340524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4825936 (or 4825934 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 212340524 is about 14571.9087287836. The cubic root of 212340524 is about 596.5922786629.

Adding to 212340524 its reverse (425043212), we get a palindrome (637383736).

The spelling of 212340524 in words is "two hundred twelve million, three hundred forty thousand, five hundred twenty-four".