231033233 has 2 divisors, whose sum is σ = 231033234. Its totient is φ = 231033232.

The previous prime is 231033197. The next prime is 231033241. The reversal of 231033233 is 332330132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 214124689 + 16908544 = 14633^2 + 4112^2 .

It is a cyclic number.

It is not a de Polignac number, because 231033233 - 2¹⁰ = 231032209 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (231032233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115516616 + 115516617.

It is an arithmetic number, because the mean of its divisors is an integer number (115516617).

Almost surely, 2^231033233 is an apocalyptic number.

It is an amenable number.

231033233 is a deficient number, since it is larger than the sum of its proper divisors (1).

231033233 is an equidigital number, since it uses as much as digits as its factorization.

231033233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 20.

The square root of 231033233 is about 15199.7773996858. Note that the first 3 decimals coincide. The cubic root of 231033233 is about 613.6086669117.

Adding to 231033233 its reverse (332330132), we get a palindrome (563363365).

The spelling of 231033233 in words is "two hundred thirty-one million, thirty-three thousand, two hundred thirty-three".