20312122003 has 2 divisors, whose sum is σ = 20312122004. Its totient is φ = 20312122002.

The previous prime is 20312122001. The next prime is 20312122037. The reversal of 20312122003 is 30022121302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20312122003 - 2¹ = 20312122001 is a prime.

Together with 20312122001, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20312122001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10156061001 + 10156061002.

It is an arithmetic number, because the mean of its divisors is an integer number (10156061002).

Almost surely, 2^20312122003 is an apocalyptic number.

20312122003 is a deficient number, since it is larger than the sum of its proper divisors (1).

20312122003 is an equidigital number, since it uses as much as digits as its factorization.

20312122003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20312122003 its reverse (30022121302), we get a palindrome (50334243305).

The spelling of 20312122003 in words is "twenty billion, three hundred twelve million, one hundred twenty-two thousand, three".