20031004003 has 8 divisors (see below), whose sum is σ = 20395365120. Its totient is φ = 19668566280.

The previous prime is 20031003983. The next prime is 20031004009. The reversal of 20031004003 is 30040013002.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20031004003 is a prime.

It is a super-2 number, since 2×20031004003² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20031004009) 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 7 ways as a sum of consecutive naturals, for example, 459823 + ... + 501496.

It is an arithmetic number, because the mean of its divisors is an integer number (2549420640).

Almost surely, 2^20031004003 is an apocalyptic number.

20031004003 is a deficient number, since it is larger than the sum of its proper divisors (364361117).

20031004003 is an equidigital number, since it uses as much as digits as its factorization.

20031004003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961697.

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

Adding to 20031004003 its reverse (30040013002), we get a palindrome (50071017005).

The spelling of 20031004003 in words is "twenty billion, thirty-one million, four thousand, three".