1003000243 has 4 divisors (see below), whose sum is σ = 1146286000. Its totient is φ = 859714488.

The previous prime is 1003000223. The next prime is 1003000277. The reversal of 1003000243 is 3420003001.

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 1003000243 - 2⁵ = 1003000211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1003000223) 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, 71642868 + ... + 71642881.

It is an arithmetic number, because the mean of its divisors is an integer number (286571500).

Almost surely, 2^1003000243 is an apocalyptic number.

1003000243 is a deficient number, since it is larger than the sum of its proper divisors (143285757).

1003000243 is an equidigital number, since it uses as much as digits as its factorization.

1003000243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143285756.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 1003000243 is about 31670.1790806430. The cubic root of 1003000243 is about 1000.9990825017. Note that the first 3 decimals are identical.

Adding to 1003000243 its reverse (3420003001), we get a palindrome (4423003244).

The spelling of 1003000243 in words is "one billion, three million, two hundred forty-three", and thus it is an aban number.