231578323 has 2 divisors, whose sum is σ = 231578324. Its totient is φ = 231578322.

The previous prime is 231578317. The next prime is 231578341. The reversal of 231578323 is 323875132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231578323 - 2⁹ = 231577811 is a prime.

It is not a weakly prime, because it can be changed into another prime (231578393) 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, 115789161 + 115789162.

It is an arithmetic number, because the mean of its divisors is an integer number (115789162).

Almost surely, 2^231578323 is an apocalyptic number.

231578323 is a deficient number, since it is larger than the sum of its proper divisors (1).

231578323 is an equidigital number, since it uses as much as digits as its factorization.

231578323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 34.

The square root of 231578323 is about 15217.6976905181. The cubic root of 231578323 is about 614.0908619648.

The spelling of 231578323 in words is "two hundred thirty-one million, five hundred seventy-eight thousand, three hundred twenty-three".