223142431 has 4 divisors (see below), whose sum is σ = 225351864. Its totient is φ = 220933000.

The previous prime is 223142419. The next prime is 223142467. The reversal of 223142431 is 134241322.

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 223142431 - 2⁷ = 223142303 is a prime.

It is a super-3 number, since 3×223142431³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223142471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1104565 + ... + 1104766.

It is an arithmetic number, because the mean of its divisors is an integer number (56337966).

Almost surely, 2^223142431 is an apocalyptic number.

223142431 is a deficient number, since it is larger than the sum of its proper divisors (2209433).

223142431 is a wasteful number, since it uses less digits than its factorization.

223142431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2209432.

The product of its digits is 1152, while the sum is 22.

The square root of 223142431 is about 14937.9527044371. The cubic root of 223142431 is about 606.5417780531.

Adding to 223142431 its reverse (134241322), we get a palindrome (357383753).

The spelling of 223142431 in words is "two hundred twenty-three million, one hundred forty-two thousand, four hundred thirty-one".