223434431 has 4 divisors (see below), whose sum is σ = 243746664. Its totient is φ = 203122200.

The previous prime is 223434403. The next prime is 223434439. The reversal of 223434431 is 134434322.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 223434431 - 2²² = 219240127 is a prime.

It is a super-2 number, since 2×223434431² = 99845889912587522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 223434431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223434439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10156100 + ... + 10156121.

It is an arithmetic number, because the mean of its divisors is an integer number (60936666).

Almost surely, 2^223434431 is an apocalyptic number.

223434431 is a deficient number, since it is larger than the sum of its proper divisors (20312233).

223434431 is a wasteful number, since it uses less digits than its factorization.

223434431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20312232.

The product of its digits is 6912, while the sum is 26.

The square root of 223434431 is about 14947.7232714551. The cubic root of 223434431 is about 606.8062324648.

Adding to 223434431 its reverse (134434322), we get a palindrome (357868753).

The spelling of 223434431 in words is "two hundred twenty-three million, four hundred thirty-four thousand, four hundred thirty-one".