213130782 has 48 divisors (see below), whose sum is σ = 474439680. Its totient is φ = 69123600.

The previous prime is 213130741. The next prime is 213130783. The reversal of 213130782 is 287031312.

213130782 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 (213130783) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 99907 + ... + 102017.

It is an arithmetic number, because the mean of its divisors is an integer number (9884160).

Almost surely, 2^213130782 is an apocalyptic number.

213130782 is an abundant number, since it is smaller than the sum of its proper divisors (261308898).

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

213130782 is a wasteful number, since it uses less digits than its factorization.

213130782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2269 (or 2266 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 213130782 is about 14598.9993492705. Note that the first 3 decimals coincide. The cubic root of 213130782 is about 597.3314658040.

The spelling of 213130782 in words is "two hundred thirteen million, one hundred thirty thousand, seven hundred eighty-two".