20323302133 has 4 divisors (see below), whose sum is σ = 20325162880. Its totient is φ = 20321441388.

The previous prime is 20323302049. The next prime is 20323302157. The reversal of 20323302133 is 33120332302.

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, and also an emirpimes, since its reverse is a distinct semiprime: 33120332302 = 2 ⋅16560166151.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20323302133 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 (20323300133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 913893 + ... + 935866.

It is an arithmetic number, because the mean of its divisors is an integer number (5081290720).

Almost surely, 2^20323302133 is an apocalyptic number.

It is an amenable number.

20323302133 is a deficient number, since it is larger than the sum of its proper divisors (1860747).

20323302133 is a wasteful number, since it uses less digits than its factorization.

20323302133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1860746.

The product of its (nonzero) digits is 1944, while the sum is 22.

Adding to 20323302133 its reverse (33120332302), we get a palindrome (53443634435).

The spelling of 20323302133 in words is "twenty billion, three hundred twenty-three million, three hundred two thousand, one hundred thirty-three".