213424233 has 16 divisors (see below), whose sum is σ = 313341696. Its totient is φ = 128137040.

The previous prime is 213424231. The next prime is 213424241. The reversal of 213424233 is 332424312.

It is a cyclic number.

It is not a de Polignac number, because 213424233 - 2¹ = 213424231 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213424231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26691 + ... + 33752.

It is an arithmetic number, because the mean of its divisors is an integer number (19583856).

Almost surely, 2^213424233 is an apocalyptic number.

It is an amenable number.

213424233 is a deficient number, since it is larger than the sum of its proper divisors (99917463).

213424233 is a wasteful number, since it uses less digits than its factorization.

213424233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60564.

The product of its digits is 3456, while the sum is 24.

The square root of 213424233 is about 14609.0462727722. The cubic root of 213424233 is about 597.6054871147.

Adding to 213424233 its reverse (332424312), we get a palindrome (545848545).

The spelling of 213424233 in words is "two hundred thirteen million, four hundred twenty-four thousand, two hundred thirty-three".