213304344 has 64 divisors (see below), whose sum is σ = 583735680. Its totient is φ = 64416000.

The previous prime is 213304307. The next prime is 213304361. The reversal of 213304344 is 443403312.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86164 + ... + 88604.

It is an arithmetic number, because the mean of its divisors is an integer number (9120870).

Almost surely, 2^213304344 is an apocalyptic number.

213304344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213304344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291867840).

213304344 is an abundant number, since it is smaller than the sum of its proper divisors (370431336).

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

213304344 is a wasteful number, since it uses less digits than its factorization.

213304344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2792 (or 2788 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 213304344 is about 14604.9424511020. The cubic root of 213304344 is about 597.4935664533.

Adding to 213304344 its reverse (443403312), we get a palindrome (656707656).

The spelling of 213304344 in words is "two hundred thirteen million, three hundred four thousand, three hundred forty-four".