20130320333 has 4 divisors (see below), whose sum is σ = 20824469340. Its totient is φ = 19436171328.

The previous prime is 20130320323. The next prime is 20130320351. The reversal of 20130320333 is 33302303102.

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 4922004649 + 15208315684 = 70157^2 + 123322^2 .

It is a cyclic number.

It is not a de Polignac number, because 20130320333 - 2²⁴ = 20113543117 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 (20130320323) 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, 347074460 + ... + 347074517.

It is an arithmetic number, because the mean of its divisors is an integer number (5206117335).

Almost surely, 2^20130320333 is an apocalyptic number.

It is an amenable number.

20130320333 is a deficient number, since it is larger than the sum of its proper divisors (694149007).

20130320333 is an equidigital number, since it uses as much as digits as its factorization.

20130320333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694149006.

The product of its (nonzero) digits is 972, while the sum is 20.

Adding to 20130320333 its reverse (33302303102), we get a palindrome (53432623435).

The spelling of 20130320333 in words is "twenty billion, one hundred thirty million, three hundred twenty thousand, three hundred thirty-three".