20071003 has 4 divisors (see below), whose sum is σ = 20094040. Its totient is φ = 20047968.

The previous prime is 20070997. The next prime is 20071027. The reversal of 20071003 is 30017002.

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 20071003 - 2⁵ = 20070971 is a prime.

It is a super-2 number, since 2×20071003² = 805690322852018, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (20071603) 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 3 ways as a sum of consecutive naturals, for example, 10158 + ... + 11971.

It is an arithmetic number, because the mean of its divisors is an integer number (5023510).

Almost surely, 2^20071003 is an apocalyptic number.

20071003 is a deficient number, since it is larger than the sum of its proper divisors (23037).

20071003 is an equidigital number, since it uses as much as digits as its factorization.

20071003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23036.

The product of its (nonzero) digits is 42, while the sum is 13.

The square root of 20071003 is about 4480.0672986017. The cubic root of 20071003 is about 271.7626019382.

Adding to 20071003 its reverse (30017002), we get a palindrome (50088005).

It can be divided in two parts, 2007 and 1003, that multiplied together give a triangular number (2013021 = T₂₀₀₆).

The spelling of 20071003 in words is "twenty million, seventy-one thousand, three".