20203020333313 has 4 divisors (see below), whose sum is σ = 20206601799748. Its totient is φ = 20199438866880.

The previous prime is 20203020333299. The next prime is 20203020333317. The reversal of 20203020333313 is 31333302030202.

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

It can be written as a sum of positive squares in 2 ways, for example, as 18787127385744 + 1415892947569 = 4334412^2 + 1189913^2 .

It is a cyclic number.

It is not a de Polignac number, because 20203020333313 - 2¹³ = 20203020325121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20203020333317) 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, 1790724756 + ... + 1790736037.

It is an arithmetic number, because the mean of its divisors is an integer number (5051650449937).

Almost surely, 2^{20203020333313} is an apocalyptic number.

It is an amenable number.

20203020333313 is a deficient number, since it is larger than the sum of its proper divisors (3581466435).

20203020333313 is an equidigital number, since it uses as much as digits as its factorization.

20203020333313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3581466434.

The product of its (nonzero) digits is 5832, while the sum is 25.

Adding to 20203020333313 its reverse (31333302030202), we get a palindrome (51536322363515).

The spelling of 20203020333313 in words is "twenty trillion, two hundred three billion, twenty million, three hundred thirty-three thousand, three hundred thirteen".