1003431223 has 4 divisors (see below), whose sum is σ = 1007629920. Its totient is φ = 999232528.

The previous prime is 1003431217. The next prime is 1003431227. The reversal of 1003431223 is 3221343001.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1003431223 is a prime.

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 1003431223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1003431227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2098990 + ... + 2099467.

It is an arithmetic number, because the mean of its divisors is an integer number (251907480).

Almost surely, 2^1003431223 is an apocalyptic number.

1003431223 is a deficient number, since it is larger than the sum of its proper divisors (4198697).

1003431223 is an equidigital number, since it uses as much as digits as its factorization.

1003431223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4198696.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1003431223 is about 31676.9825425339. The cubic root of 1003431223 is about 1001.1424353445.

Adding to 1003431223 its reverse (3221343001), we get a palindrome (4224774224).

The spelling of 1003431223 in words is "one billion, three million, four hundred thirty-one thousand, two hundred twenty-three".