213320436 has 24 divisors (see below), whose sum is σ = 568854720. Its totient is φ = 60948672.

The previous prime is 213320413. The next prime is 213320441. The reversal of 213320436 is 634023312.

213320436 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1269681 + ... + 1269848.

It is an arithmetic number, because the mean of its divisors is an integer number (23702280).

Almost surely, 2^213320436 is an apocalyptic number.

It is an amenable number.

213320436 is an abundant number, since it is smaller than the sum of its proper divisors (355534284).

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

213320436 is a wasteful number, since it uses less digits than its factorization.

213320436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2539543 (or 2539541 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 213320436 is about 14605.4933501063. The cubic root of 213320436 is about 597.5085913460.

Adding to 213320436 its reverse (634023312), we get a palindrome (847343748).

The spelling of 213320436 in words is "two hundred thirteen million, three hundred twenty thousand, four hundred thirty-six".