20413121303 has 2 divisors, whose sum is σ = 20413121304. Its totient is φ = 20413121302.

The previous prime is 20413121279. The next prime is 20413121329. The reversal of 20413121303 is 30312131402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20413121303 - 2²⁰ = 20412072727 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20413121503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10206560651 + 10206560652.

It is an arithmetic number, because the mean of its divisors is an integer number (10206560652).

Almost surely, 2^20413121303 is an apocalyptic number.

20413121303 is a deficient number, since it is larger than the sum of its proper divisors (1).

20413121303 is an equidigital number, since it uses as much as digits as its factorization.

20413121303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20413121303 its reverse (30312131402), we get a palindrome (50725252705).

The spelling of 20413121303 in words is "twenty billion, four hundred thirteen million, one hundred twenty-one thousand, three hundred three".