223242431 has 4 divisors (see below), whose sum is σ = 224300664. Its totient is φ = 222184200.

The previous prime is 223242403. The next prime is 223242443. The reversal of 223242431 is 134242322.

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 223242431 - 2¹⁰ = 223241407 is a prime.

It is a super-3 number, since 3×223242431³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 223242397 and 223242406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223242451) 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, 528800 + ... + 529221.

It is an arithmetic number, because the mean of its divisors is an integer number (56075166).

Almost surely, 2^223242431 is an apocalyptic number.

223242431 is a deficient number, since it is larger than the sum of its proper divisors (1058233).

223242431 is a wasteful number, since it uses less digits than its factorization.

223242431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058232.

The product of its digits is 2304, while the sum is 23.

The square root of 223242431 is about 14941.2995084096. The cubic root of 223242431 is about 606.6323705941.

Adding to 223242431 its reverse (134242322), we get a palindrome (357484753).

The spelling of 223242431 in words is "two hundred twenty-three million, two hundred forty-two thousand, four hundred thirty-one".