20313003 has 4 divisors (see below), whose sum is σ = 27084008. Its totient is φ = 13542000.

The previous prime is 20313001. The next prime is 20313047. The reversal of 20313003 is 30031302.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20313003 - 2¹ = 20313001 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20313003.

It is not an unprimeable number, because it can be changed into a prime (20313001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3385498 + ... + 3385503.

It is an arithmetic number, because the mean of its divisors is an integer number (6771002).

Almost surely, 2^20313003 is an apocalyptic number.

20313003 is a deficient number, since it is larger than the sum of its proper divisors (6771005).

20313003 is an equidigital number, since it uses as much as digits as its factorization.

20313003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6771004.

The product of its (nonzero) digits is 54, while the sum is 12.

The square root of 20313003 is about 4506.9948968243. The cubic root of 20313003 is about 272.8504729338.

Adding to 20313003 its reverse (30031302), we get a palindrome (50344305).

The spelling of 20313003 in words is "twenty million, three hundred thirteen thousand, three".