20533030403 has 2 divisors, whose sum is σ = 20533030404. Its totient is φ = 20533030402.

The previous prime is 20533030387. The next prime is 20533030411. The reversal of 20533030403 is 30403033502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20533030403 - 2⁴ = 20533030387 is a prime.

It is not a weakly prime, because it can be changed into another prime (20533030433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10266515201 + 10266515202.

It is an arithmetic number, because the mean of its divisors is an integer number (10266515202).

Almost surely, 2^20533030403 is an apocalyptic number.

20533030403 is a deficient number, since it is larger than the sum of its proper divisors (1).

20533030403 is an equidigital number, since it uses as much as digits as its factorization.

20533030403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 23.

Adding to 20533030403 its reverse (30403033502), we get a palindrome (50936063905).

The spelling of 20533030403 in words is "twenty billion, five hundred thirty-three million, thirty thousand, four hundred three".