20233231231 has 2 divisors, whose sum is σ = 20233231232. Its totient is φ = 20233231230.

The previous prime is 20233231211. The next prime is 20233231243. The reversal of 20233231231 is 13213233202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20233231231 - 2⁵ = 20233231199 is a prime.

It is a super-3 number, since 3×20233231231³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20233231211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10116615615 + 10116615616.

It is an arithmetic number, because the mean of its divisors is an integer number (10116615616).

Almost surely, 2^20233231231 is an apocalyptic number.

20233231231 is a deficient number, since it is larger than the sum of its proper divisors (1).

20233231231 is an equidigital number, since it uses as much as digits as its factorization.

20233231231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 20233231231 its reverse (13213233202), we get a palindrome (33446464433).

The spelling of 20233231231 in words is "twenty billion, two hundred thirty-three million, two hundred thirty-one thousand, two hundred thirty-one".