20013031003 has 16 divisors (see below), whose sum is σ = 23020945920. Its totient is φ = 17042452416.

The previous prime is 20013030977. The next prime is 20013031039. The reversal of 20013031003 is 30013031002.

It is a cyclic number.

It is not a de Polignac number, because 20013031003 - 2⁵ = 20013030971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20013031043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3292375 + ... + 3298447.

It is an arithmetic number, because the mean of its divisors is an integer number (1438809120).

Almost surely, 2^20013031003 is an apocalyptic number.

20013031003 is a deficient number, since it is larger than the sum of its proper divisors (3007914917).

20013031003 is a wasteful number, since it uses less digits than its factorization.

20013031003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9066.

The product of its (nonzero) digits is 54, while the sum is 13.

Adding to 20013031003 its reverse (30013031002), we get a palindrome (50026062005).

Subtracting 20013031003 from its reverse (30013031002), we obtain a palindrome (9999999999).

The spelling of 20013031003 in words is "twenty billion, thirteen million, thirty-one thousand, three".