212320524 has 24 divisors (see below), whose sum is σ = 533523760. Its totient is φ = 65329344.

The previous prime is 212320523. The next prime is 212320543. The reversal of 212320524 is 425023212.

It is a self number, because there is not a number n which added to its sum of digits gives 212320524.

It is not an unprimeable number, because it can be changed into a prime (212320523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 680359 + ... + 680670.

Almost surely, 2^212320524 is an apocalyptic number.

It is an amenable number.

212320524 is an abundant number, since it is smaller than the sum of its proper divisors (321203236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212320524 is a wasteful number, since it uses less digits than its factorization.

212320524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1361049 (or 1361047 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 212320524 is about 14571.2224607272. Note that the first 3 decimals coincide. The cubic root of 212320524 is about 596.5735473974.

Adding to 212320524 its reverse (425023212), we get a palindrome (637343736).

The spelling of 212320524 in words is "two hundred twelve million, three hundred twenty thousand, five hundred twenty-four".