233132231 has 2 divisors, whose sum is σ = 233132232. Its totient is φ = 233132230.

The previous prime is 233132129. The next prime is 233132233. The reversal of 233132231 is 132231332.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 233132231 - 2²² = 228937927 is a prime.

It is a super-2 number, since 2×233132231² = 108701274262074722, which contains 22 as substring.

Together with 233132233, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (233132233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116566115 + 116566116.

It is an arithmetic number, because the mean of its divisors is an integer number (116566116).

Almost surely, 2^233132231 is an apocalyptic number.

233132231 is a deficient number, since it is larger than the sum of its proper divisors (1).

233132231 is an equidigital number, since it uses as much as digits as its factorization.

233132231 is an odious number, because the sum of its binary digits is odd.

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

The square root of 233132231 is about 15268.6682785369. The cubic root of 233132231 is about 615.4613331867.

Adding to 233132231 its reverse (132231332), we get a palindrome (365363563).

The spelling of 233132231 in words is "two hundred thirty-three million, one hundred thirty-two thousand, two hundred thirty-one".