213535056 has 80 divisors (see below), whose sum is σ = 639387648. Its totient is φ = 60144000.

The previous prime is 213535027. The next prime is 213535057. The reversal of 213535056 is 650535312.

213535056 is digitally balanced in base 3, 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 (213535057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19381 + ... + 28331.

Almost surely, 2^213535056 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 213535056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (319693824).

213535056 is an abundant number, since it is smaller than the sum of its proper divisors (425852592).

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

213535056 is a wasteful number, since it uses less digits than its factorization.

213535056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9040 (or 9034 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 30.

The square root of 213535056 is about 14612.8387385887. The cubic root of 213535056 is about 597.7089070684.

The spelling of 213535056 in words is "two hundred thirteen million, five hundred thirty-five thousand, fifty-six".