213215430 has 32 divisors (see below), whose sum is σ = 512291808. Its totient is φ = 56793600.

The previous prime is 213215417. The next prime is 213215437. The reversal of 213215430 is 34512312.

213215430 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 = 213215397 and 213215406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213215437) 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, 27150 + ... + 34110.

It is an arithmetic number, because the mean of its divisors is an integer number (16009119).

Almost surely, 2^213215430 is an apocalyptic number.

213215430 is an abundant number, since it is smaller than the sum of its proper divisors (299076378).

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

213215430 is a wasteful number, since it uses less digits than its factorization.

213215430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7992.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 213215430 is about 14601.8981642799. The cubic root of 213215430 is about 597.4105349730.

Adding to 213215430 its reverse (34512312), we get a palindrome (247727742).

The spelling of 213215430 in words is "two hundred thirteen million, two hundred fifteen thousand, four hundred thirty".