231328547 has 2 divisors, whose sum is σ = 231328548. Its totient is φ = 231328546.

The previous prime is 231328529. The next prime is 231328561. The reversal of 231328547 is 745823132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231328547 - 2⁶ = 231328483 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (231328247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115664273 + 115664274.

It is an arithmetic number, because the mean of its divisors is an integer number (115664274).

Almost surely, 2^231328547 is an apocalyptic number.

231328547 is a deficient number, since it is larger than the sum of its proper divisors (1).

231328547 is an equidigital number, since it uses as much as digits as its factorization.

231328547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 35.

The square root of 231328547 is about 15209.4887159299. The cubic root of 231328547 is about 613.8700002763.

The spelling of 231328547 in words is "two hundred thirty-one million, three hundred twenty-eight thousand, five hundred forty-seven".