231040571 has 2 divisors, whose sum is σ = 231040572. Its totient is φ = 231040570.

The previous prime is 231040531. The next prime is 231040577. The reversal of 231040571 is 175040132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231040571 - 2⁶ = 231040507 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (231040577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115520285 + 115520286.

It is an arithmetic number, because the mean of its divisors is an integer number (115520286).

Almost surely, 2^231040571 is an apocalyptic number.

231040571 is a deficient number, since it is larger than the sum of its proper divisors (1).

231040571 is an equidigital number, since it uses as much as digits as its factorization.

231040571 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 231040571 is about 15200.0187828831. The cubic root of 231040571 is about 613.6151632538.

The spelling of 231040571 in words is "two hundred thirty-one million, forty thousand, five hundred seventy-one".