20231133205 has 4 divisors (see below), whose sum is σ = 24277359852. Its totient is φ = 16184906560.

The previous prime is 20231133157. The next prime is 20231133211. The reversal of 20231133205 is 50233113202.

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 5116397841 + 15114735364 = 71529^2 + 122942^2 .

It is not a de Polignac number, because 20231133205 - 2⁷ = 20231133077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2023113316 + ... + 2023113325.

It is an arithmetic number, because the mean of its divisors is an integer number (6069339963).

Almost surely, 2^20231133205 is an apocalyptic number.

It is an amenable number.

20231133205 is a deficient number, since it is larger than the sum of its proper divisors (4046226647).

20231133205 is an equidigital number, since it uses as much as digits as its factorization.

20231133205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4046226646.

The product of its (nonzero) digits is 1080, while the sum is 22.

Adding to 20231133205 its reverse (50233113202), we get a palindrome (70464246407).

The spelling of 20231133205 in words is "twenty billion, two hundred thirty-one million, one hundred thirty-three thousand, two hundred five".