232305247 has 2 divisors, whose sum is σ = 232305248. Its totient is φ = 232305246.

The previous prime is 232305223. The next prime is 232305253. The reversal of 232305247 is 742503232.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-232305247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (232305347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116152623 + 116152624.

It is an arithmetic number, because the mean of its divisors is an integer number (116152624).

Almost surely, 2^232305247 is an apocalyptic number.

232305247 is a deficient number, since it is larger than the sum of its proper divisors (1).

232305247 is an equidigital number, since it uses as much as digits as its factorization.

232305247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 28.

The square root of 232305247 is about 15241.5631416204. The cubic root of 232305247 is about 614.7327342445.

Adding to 232305247 its reverse (742503232), we get a palindrome (974808479).

The spelling of 232305247 in words is "two hundred thirty-two million, three hundred five thousand, two hundred forty-seven".