231032233 has 2 divisors, whose sum is σ = 231032234. Its totient is φ = 231032232.

The previous prime is 231032209. The next prime is 231032273. The reversal of 231032233 is 332230132.

It is a happy number.

231032233 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 218093824 + 12938409 = 14768^2 + 3597^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231032233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231032233.

It is not a weakly prime, because it can be changed into another prime (231032273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115516116 + 115516117.

It is an arithmetic number, because the mean of its divisors is an integer number (115516117).

Almost surely, 2^231032233 is an apocalyptic number.

It is an amenable number.

231032233 is a deficient number, since it is larger than the sum of its proper divisors (1).

231032233 is an equidigital number, since it uses as much as digits as its factorization.

231032233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 231032233 is about 15199.7445044316. The cubic root of 231032233 is about 613.6077815996.

Adding to 231032233 its reverse (332230132), we get a palindrome (563262365).

It can be divided in two parts, 2310 and 32233, that added together give a palindrome (34543).

The spelling of 231032233 in words is "two hundred thirty-one million, thirty-two thousand, two hundred thirty-three".