213241434 has 48 divisors (see below), whose sum is σ = 509547168. Its totient is φ = 59276448.

The previous prime is 213241409. The next prime is 213241439. The reversal of 213241434 is 434142312.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (213241439) 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, 1077 + ... + 20679.

It is an arithmetic number, because the mean of its divisors is an integer number (10615566).

Almost surely, 2^213241434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213241434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254773584).

213241434 is an abundant number, since it is smaller than the sum of its proper divisors (296305734).

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

213241434 is a wasteful number, since it uses less digits than its factorization.

213241434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19659 (or 19652 counting only the distinct ones).

The product of its digits is 2304, while the sum is 24.

The square root of 213241434 is about 14602.7885693110. The cubic root of 213241434 is about 597.4348209452.

Adding to 213241434 its reverse (434142312), we get a palindrome (647383746).

The spelling of 213241434 in words is "two hundred thirteen million, two hundred forty-one thousand, four hundred thirty-four".