231005303 has 2 divisors, whose sum is σ = 231005304. Its totient is φ = 231005302.

The previous prime is 231005239. The next prime is 231005311. The reversal of 231005303 is 303500132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231005303 - 2⁶ = 231005239 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231005903) 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, 115502651 + 115502652.

It is an arithmetic number, because the mean of its divisors is an integer number (115502652).

Almost surely, 2^231005303 is an apocalyptic number.

231005303 is a deficient number, since it is larger than the sum of its proper divisors (1).

231005303 is an equidigital number, since it uses as much as digits as its factorization.

231005303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 270, while the sum is 17.

The square root of 231005303 is about 15198.8586084614. The cubic root of 231005303 is about 613.5839391838.

Adding to 231005303 its reverse (303500132), we get a palindrome (534505435).

The spelling of 231005303 in words is "two hundred thirty-one million, five thousand, three hundred three".