213304134340 has 96 divisors (see below), whose sum is σ = 517542286464. Its totient is φ = 72983132160.

The previous prime is 213304134287. The next prime is 213304134343. The reversal of 213304134340 is 43431403312.

213304134340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 213304134299 and 213304134308.

It is not an unprimeable number, because it can be changed into a prime (213304134343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26972667 + ... + 26980573.

It is an arithmetic number, because the mean of its divisors is an integer number (5391065484).

Almost surely, 2^213304134340 is an apocalyptic number.

213304134340 is a gapful number since it is divisible by the number (20) 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 213304134340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (258771143232).

213304134340 is an abundant number, since it is smaller than the sum of its proper divisors (304238152124).

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

213304134340 is a wasteful number, since it uses less digits than its factorization.

213304134340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15157 (or 15155 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 213304134340 its reverse (43431403312), we get a palindrome (256735537652).

The spelling of 213304134340 in words is "two hundred thirteen billion, three hundred four million, one hundred thirty-four thousand, three hundred forty".