213113056 has 72 divisors (see below), whose sum is σ = 459038664. Its totient is φ = 97344000.

The previous prime is 213113051. The next prime is 213113057. The reversal of 213113056 is 650311312.

It is a happy number.

213113056 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 not an unprimeable number, because it can be changed into a prime (213113051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 848931 + ... + 849181.

It is an arithmetic number, because the mean of its divisors is an integer number (6375537).

Almost surely, 2^213113056 is an apocalyptic number.

213113056 is a gapful number since it is divisible by the number (26) 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 213113056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229519332).

213113056 is an abundant number, since it is smaller than the sum of its proper divisors (245925608).

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

213113056 is a wasteful number, since it uses less digits than its factorization.

213113056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444 (or 423 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 213113056 is about 14598.3922402434. The cubic root of 213113056 is about 597.3149054069.

Adding to 213113056 its reverse (650311312), we get a palindrome (863424368).

The spelling of 213113056 in words is "two hundred thirteen million, one hundred thirteen thousand, fifty-six".