233233021231 has 4 divisors (see below), whose sum is σ = 266552024272. Its totient is φ = 199914018192.

The previous prime is 233233021183. The next prime is 233233021267. The reversal of 233233021231 is 132120332332.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 233233021231 - 2⁹ = 233233020719 is a prime.

It is a super-2 number, since 2×233233021231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 233233021196 and 233233021205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233233021291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16659501510 + ... + 16659501523.

It is an arithmetic number, because the mean of its divisors is an integer number (66638006068).

Almost surely, 2^233233021231 is an apocalyptic number.

233233021231 is a deficient number, since it is larger than the sum of its proper divisors (33319003041).

233233021231 is an equidigital number, since it uses as much as digits as its factorization.

233233021231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33319003040.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 233233021231 its reverse (132120332332), we get a palindrome (365353353563).

The spelling of 233233021231 in words is "two hundred thirty-three billion, two hundred thirty-three million, twenty-one thousand, two hundred thirty-one".