1003971 has 8 divisors (see below), whose sum is σ = 1343680. Its totient is φ = 666792.

The previous prime is 1003963. The next prime is 1004027. The reversal of 1003971 is 1793001.

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

It is not a de Polignac number, because 1003971 - 2³ = 1003963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1003931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 696 + ... + 1578.

It is an arithmetic number, because the mean of its divisors is an integer number (167960).

2^1003971 is an apocalyptic number.

1003971 is a deficient number, since it is larger than the sum of its proper divisors (339709).

1003971 is an equidigital number, since it uses as much as digits as its factorization.

1003971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265.

The product of its (nonzero) digits is 189, while the sum is 21.

The square root of 1003971 is about 1001.9835327988. The cubic root of 1003971 is about 100.1321918428.

Adding to 1003971 its reverse (1793001), we get a palindrome (2796972).

The spelling of 1003971 in words is "one million, three thousand, nine hundred seventy-one".