1003431043 has 4 divisors (see below), whose sum is σ = 1007737848. Its totient is φ = 999124240.

The previous prime is 1003431031. The next prime is 1003431053. The reversal of 1003431043 is 3401343001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3401343001 = 7 ⋅485906143.

It is a cyclic number.

It is not a de Polignac number, because 1003431043 - 2⁹ = 1003430531 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 1003431043.

It is not an unprimeable number, because it can be changed into a prime (1003431053) 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, 2153053 + ... + 2153518.

It is an arithmetic number, because the mean of its divisors is an integer number (251934462).

Almost surely, 2^1003431043 is an apocalyptic number.

1003431043 is a deficient number, since it is larger than the sum of its proper divisors (4306805).

1003431043 is an equidigital number, since it uses as much as digits as its factorization.

1003431043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4306804.

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

The square root of 1003431043 is about 31676.9797013541. The cubic root of 1003431043 is about 1001.1423754813.

Adding to 1003431043 its reverse (3401343001), we get a palindrome (4404774044).

The spelling of 1003431043 in words is "one billion, three million, four hundred thirty-one thousand, forty-three".