213313436 has 48 divisors (see below), whose sum is σ = 442411200. Its totient is φ = 88086528.

The previous prime is 213313427. The next prime is 213313481. The reversal of 213313436 is 634313312.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111980 + ... + 113868.

It is an arithmetic number, because the mean of its divisors is an integer number (9216900).

Almost surely, 2^213313436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213313436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221205600).

213313436 is an abundant number, since it is smaller than the sum of its proper divisors (229097764).

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

213313436 is a wasteful number, since it uses less digits than its factorization.

213313436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2046 (or 2044 counting only the distinct ones).

The product of its digits is 3888, while the sum is 26.

The square root of 213313436 is about 14605.2537122776. The cubic root of 213313436 is about 597.5020556292.

Adding to 213313436 its reverse (634313312), we get a palindrome (847626748).

The spelling of 213313436 in words is "two hundred thirteen million, three hundred thirteen thousand, four hundred thirty-six".