20031311003 has 8 divisors (see below), whose sum is σ = 21872455680. Its totient is φ = 18193519080.

The previous prime is 20031310991. The next prime is 20031311009. The reversal of 20031311003 is 30011313002.

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

It is not a de Polignac number, because 20031311003 - 2¹⁰ = 20031309979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20031311009) 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, 825683 + ... + 849596.

It is an arithmetic number, because the mean of its divisors is an integer number (2734056960).

Almost surely, 2^20031311003 is an apocalyptic number.

20031311003 is a deficient number, since it is larger than the sum of its proper divisors (1841144677).

20031311003 is a wasteful number, since it uses less digits than its factorization.

20031311003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1676377.

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 20031311003 its reverse (30011313002), we get a palindrome (50042624005).

The spelling of 20031311003 in words is "twenty billion, thirty-one million, three hundred eleven thousand, three".