231035143 has 2 divisors, whose sum is σ = 231035144. Its totient is φ = 231035142.

The previous prime is 231035131. The next prime is 231035179. The reversal of 231035143 is 341530132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231035143 - 2¹³ = 231026951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231035113) 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, 115517571 + 115517572.

It is an arithmetic number, because the mean of its divisors is an integer number (115517572).

Almost surely, 2^231035143 is an apocalyptic number.

231035143 is a deficient number, since it is larger than the sum of its proper divisors (1).

231035143 is an equidigital number, since it uses as much as digits as its factorization.

231035143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 231035143 is about 15199.8402294235. The cubic root of 231035143 is about 613.6103578507.

Adding to 231035143 its reverse (341530132), we get a palindrome (572565275).

The spelling of 231035143 in words is "two hundred thirty-one million, thirty-five thousand, one hundred forty-three".