231148163 has 2 divisors, whose sum is σ = 231148164. Its totient is φ = 231148162.

The previous prime is 231148153. The next prime is 231148217. The reversal of 231148163 is 361841132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231148163 - 2⁴ = 231148147 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (231148103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115574081 + 115574082.

It is an arithmetic number, because the mean of its divisors is an integer number (115574082).

Almost surely, 2^231148163 is an apocalyptic number.

231148163 is a deficient number, since it is larger than the sum of its proper divisors (1).

231148163 is an equidigital number, since it uses as much as digits as its factorization.

231148163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 29.

The square root of 231148163 is about 15203.5575770936. The cubic root of 231148163 is about 613.7103988176.

Adding to 231148163 its reverse (361841132), we get a palindrome (592989295).

The spelling of 231148163 in words is "two hundred thirty-one million, one hundred forty-eight thousand, one hundred sixty-three".