223431431 has 8 divisors (see below), whose sum is σ = 236111280. Its totient is φ = 210843648.

The previous prime is 223431409. The next prime is 223431463. The reversal of 223431431 is 134134322.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 223431431 - 2⁶ = 223431367 is a prime.

It is a super-2 number, since 2×223431431² = 99843208717415522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 223431397 and 223431406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223431931) 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 7 ways as a sum of consecutive naturals, for example, 17996 + ... + 27761.

It is an arithmetic number, because the mean of its divisors is an integer number (29513910).

Almost surely, 2^223431431 is an apocalyptic number.

223431431 is a deficient number, since it is larger than the sum of its proper divisors (12679849).

223431431 is a wasteful number, since it uses less digits than its factorization.

223431431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46033.

The product of its digits is 1728, while the sum is 23.

The square root of 223431431 is about 14947.6229213879. The cubic root of 223431431 is about 606.8035166392.

Adding to 223431431 its reverse (134134322), we get a palindrome (357565753).

The spelling of 223431431 in words is "two hundred twenty-three million, four hundred thirty-one thousand, four hundred thirty-one".