213540430 has 16 divisors (see below), whose sum is σ = 404603280. Its totient is φ = 80920512.

The previous prime is 213540419. The next prime is 213540463. The reversal of 213540430 is 34045312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 561759 + ... + 562138.

It is an arithmetic number, because the mean of its divisors is an integer number (25287705).

Almost surely, 2^213540430 is an apocalyptic number.

213540430 is a deficient number, since it is larger than the sum of its proper divisors (191062850).

213540430 is a wasteful number, since it uses less digits than its factorization.

213540430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123923.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 213540430 is about 14613.0226168305. The cubic root of 213540430 is about 597.7139211721.

Adding to 213540430 its reverse (34045312), we get a palindrome (247585742).

The spelling of 213540430 in words is "two hundred thirteen million, five hundred forty thousand, four hundred thirty".