231042433 has 2 divisors, whose sum is σ = 231042434. Its totient is φ = 231042432.

The previous prime is 231042419. The next prime is 231042463. The reversal of 231042433 is 334240132.

It is a happy number.

231042433 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., 140849424 + 90193009 = 11868^2 + 9497^2 .

It is a cyclic number.

It is not a de Polignac number, because 231042433 - 2²¹ = 228945281 is a prime.

It is not a weakly prime, because it can be changed into another prime (231042463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115521216 + 115521217.

It is an arithmetic number, because the mean of its divisors is an integer number (115521217).

Almost surely, 2^231042433 is an apocalyptic number.

It is an amenable number.

231042433 is a deficient number, since it is larger than the sum of its proper divisors (1).

231042433 is an equidigital number, since it uses as much as digits as its factorization.

231042433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 231042433 is about 15200.0800326840. The cubic root of 231042433 is about 613.6168116632.

Adding to 231042433 its reverse (334240132), we get a palindrome (565282565).

The spelling of 231042433 in words is "two hundred thirty-one million, forty-two thousand, four hundred thirty-three".