20303233113133 has 4 divisors (see below), whose sum is σ = 20310608064348. Its totient is φ = 20295858161920.

The previous prime is 20303233113113. The next prime is 20303233113217. The reversal of 20303233113133 is 33131133230302.

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 14522295720969 + 5780937392164 = 3810813^2 + 2404358^2 .

It is a cyclic number.

It is not a de Polignac number, because 20303233113133 - 2²⁹ = 20302696242221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20303233113103) 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, 3687471478 + ... + 3687476983.

It is an arithmetic number, because the mean of its divisors is an integer number (5077652016087).

Almost surely, 2^{20303233113133} is an apocalyptic number.

It is an amenable number.

20303233113133 is a deficient number, since it is larger than the sum of its proper divisors (7374951215).

20303233113133 is an equidigital number, since it uses as much as digits as its factorization.

20303233113133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7374951214.

The product of its (nonzero) digits is 8748, while the sum is 28.

Adding to 20303233113133 its reverse (33131133230302), we get a palindrome (53434366343435).

The spelling of 20303233113133 in words is "twenty trillion, three hundred three billion, two hundred thirty-three million, one hundred thirteen thousand, one hundred thirty-three".