213421324 has 48 divisors (see below), whose sum is σ = 406425600. Its totient is φ = 97756736.

The previous prime is 213421321. The next prime is 213421367. The reversal of 213421324 is 423124312.

It is a junction number, because it is equal to n+sod(n) for n = 213421295 and 213421304.

It is not an unprimeable number, because it can be changed into a prime (213421321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 445317 + ... + 445795.

It is an arithmetic number, because the mean of its divisors is an integer number (8467200).

Almost surely, 2^213421324 is an apocalyptic number.

It is an amenable number.

213421324 is a deficient number, since it is larger than the sum of its proper divisors (193004276).

213421324 is a wasteful number, since it uses less digits than its factorization.

213421324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702 (or 700 counting only the distinct ones).

The product of its digits is 1152, while the sum is 22.

The square root of 213421324 is about 14608.9467108344. The cubic root of 213421324 is about 597.6027719556.

Adding to 213421324 its reverse (423124312), we get a palindrome (636545636).

The spelling of 213421324 in words is "two hundred thirteen million, four hundred twenty-one thousand, three hundred twenty-four".