20320001003 has 16 divisors (see below), whose sum is σ = 21485362080. Its totient is φ = 19164397824.

The previous prime is 20320000997. The next prime is 20320001011. The reversal of 20320001003 is 30010002302.

It is a cyclic number.

It is not a de Polignac number, because 20320001003 - 2¹⁰ = 20319999979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20320001033) 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, 6022625 + ... + 6025997.

It is an arithmetic number, because the mean of its divisors is an integer number (1342835130).

Almost surely, 2^20320001003 is an apocalyptic number.

20320001003 is a deficient number, since it is larger than the sum of its proper divisors (1165361077).

20320001003 is a wasteful number, since it uses less digits than its factorization.

20320001003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4718.

The product of its (nonzero) digits is 36, while the sum is 11.

Adding to 20320001003 its reverse (30010002302), we get a palindrome (50330003305).

The spelling of 20320001003 in words is "twenty billion, three hundred twenty million, one thousand, three".