223543434 has 16 divisors (see below), whose sum is σ = 449586720. Its totient is φ = 74097840.

The previous prime is 223543433. The next prime is 223543469. The reversal of 223543434 is 434345322.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (223543433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102997 + ... + 105144.

It is an arithmetic number, because the mean of its divisors is an integer number (28099170).

Almost surely, 2^223543434 is an apocalyptic number.

223543434 is an abundant number, since it is smaller than the sum of its proper divisors (226043286).

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

223543434 is a wasteful number, since it uses less digits than its factorization.

223543434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208325.

The product of its digits is 34560, while the sum is 30.

The square root of 223543434 is about 14951.3689674223. The cubic root of 223543434 is about 606.9048936936.

Adding to 223543434 its reverse (434345322), we get a palindrome (657888756).

The spelling of 223543434 in words is "two hundred twenty-three million, five hundred forty-three thousand, four hundred thirty-four".