213530870 has 64 divisors (see below), whose sum is σ = 459841536. Its totient is φ = 69861120.

The previous prime is 213530869. The next prime is 213530879. The reversal of 213530870 is 78035312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213530879) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 134099 + ... + 135681.

It is an arithmetic number, because the mean of its divisors is an integer number (7185024).

Almost surely, 2^213530870 is an apocalyptic number.

213530870 is an abundant number, since it is smaller than the sum of its proper divisors (246310666).

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

213530870 is a wasteful number, since it uses less digits than its factorization.

213530870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1685.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 213530870 is about 14612.6955076741. The cubic root of 213530870 is about 597.7050013462.

The spelling of 213530870 in words is "two hundred thirteen million, five hundred thirty thousand, eight hundred seventy".