20303323033 has 4 divisors (see below), whose sum is σ = 23203797760. Its totient is φ = 17402848308.

The previous prime is 20303323013. The next prime is 20303323063. The reversal of 20303323033 is 33032330302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20303323033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20303322995 and 20303323013.

It is not an unprimeable number, because it can be changed into a prime (20303323013) 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, 1450237353 + ... + 1450237366.

It is an arithmetic number, because the mean of its divisors is an integer number (5800949440).

Almost surely, 2^20303323033 is an apocalyptic number.

It is an amenable number.

20303323033 is a deficient number, since it is larger than the sum of its proper divisors (2900474727).

20303323033 is an equidigital number, since it uses as much as digits as its factorization.

20303323033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2900474726.

The product of its (nonzero) digits is 2916, while the sum is 22.

Adding to 20303323033 its reverse (33032330302), we get a palindrome (53335653335).

The spelling of 20303323033 in words is "twenty billion, three hundred three million, three hundred twenty-three thousand, thirty-three".