20011323233 has 24 divisors (see below), whose sum is σ = 22216271328. Its totient is φ = 17876096000.

The previous prime is 20011323229. The next prime is 20011323251. The reversal of 20011323233 is 33232311002.

It is not a de Polignac number, because 20011323233 - 2² = 20011323229 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20011373233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31218593 + ... + 31219233.

It is an arithmetic number, because the mean of its divisors is an integer number (925677972).

Almost surely, 2^20011323233 is an apocalyptic number.

It is an amenable number.

20011323233 is a deficient number, since it is larger than the sum of its proper divisors (2204948095).

20011323233 is an equidigital number, since it uses as much as digits as its factorization.

20011323233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1357 (or 1286 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 20011323233 its reverse (33232311002), we get a palindrome (53243634235).

The spelling of 20011323233 in words is "twenty billion, eleven million, three hundred twenty-three thousand, two hundred thirty-three".