20023131233 has 32 divisors (see below), whose sum is σ = 25292809728. Its totient is φ = 15458688000.

The previous prime is 20023131221. The next prime is 20023131253. The reversal of 20023131233 is 33213132002.

It is not a de Polignac number, because 20023131233 - 2⁴ = 20023131217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20023131253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 231308 + ... + 305858.

It is an arithmetic number, because the mean of its divisors is an integer number (790400304).

Almost surely, 2^20023131233 is an apocalyptic number.

It is an amenable number.

20023131233 is a deficient number, since it is larger than the sum of its proper divisors (5269678495).

20023131233 is a wasteful number, since it uses less digits than its factorization.

20023131233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74673.

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

Adding to 20023131233 its reverse (33213132002), we get a palindrome (53236263235).

The spelling of 20023131233 in words is "twenty billion, twenty-three million, one hundred thirty-one thousand, two hundred thirty-three".