20000030503 has 2 divisors, whose sum is σ = 20000030504. Its totient is φ = 20000030502.

The previous prime is 20000030471. The next prime is 20000030507. The reversal of 20000030503 is 30503000002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20000030503 - 2⁵ = 20000030471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20000030507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000015251 + 10000015252.

It is an arithmetic number, because the mean of its divisors is an integer number (10000015252).

Almost surely, 2^20000030503 is an apocalyptic number.

20000030503 is a deficient number, since it is larger than the sum of its proper divisors (1).

20000030503 is an equidigital number, since it uses as much as digits as its factorization.

20000030503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90, while the sum is 13.

Adding to 20000030503 its reverse (30503000002), we get a palindrome (50503030505).

The spelling of 20000030503 in words is "twenty billion, thirty thousand, five hundred three".