213211430 has 16 divisors (see below), whose sum is σ = 384017760. Its totient is φ = 85231872.

The previous prime is 213211423. The next prime is 213211457. The reversal of 213211430 is 34112312.

213211430 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×213211430² = 90918227765289800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213211399 and 213211408.

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, 13247 + ... + 24533.

It is an arithmetic number, because the mean of its divisors is an integer number (24001110).

Almost surely, 2^213211430 is an apocalyptic number.

213211430 is a deficient number, since it is larger than the sum of its proper divisors (170806330).

213211430 is a wasteful number, since it uses less digits than its factorization.

213211430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13183.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 213211430 is about 14601.7611951436. The cubic root of 213211430 is about 597.4067990690.

Adding to 213211430 its reverse (34112312), we get a palindrome (247323742).

The spelling of 213211430 in words is "two hundred thirteen million, two hundred eleven thousand, four hundred thirty".